Momentum and Energy: Interactive Learning Quizzes for Physics

Question 1

As a roller coaster car ascends a hill, then descends, which energy transformation occurs?

Accepted Answer

Gravitational potential energy to kinetic energy

Answer

Chemical energy to kinetic energy to gravitational potential energy

Answer

Kinetic energy to thermal energy

Answer

Thermal energy to potential energy

Question 2

In a perfectly elastic collision, both momentum and energy are conserved. True or False?

Accepted Answer

True

Answer

False

Question 3

A ball is thrown vertically upward with an initial velocity of 10 m/s. What is its velocity at the highest point of its trajectory?

Accepted Answer

0 m/s

Answer

5 m/s

Answer

10 m/s

Answer

15 m/s

Question 4

Which of the following is the unit of momentum?

Accepted Answer

Newtons

Answer

Joules

Answer

Watts

Answer

Kilograms

Question 5

In a perfectly inelastic collision, the kinetic energy of the objects involved is converted into heat. True or False?

Accepted Answer

True

Answer

False

Question 6

Which of the following is NOT a form of energy?

Accepted Answer

Mass

Answer

Kinetic energy

Answer

Potential energy

Answer

Heat energy

Question 7

Momentum is a vector quantity that depends on the frame of reference. True or False?

Accepted Answer

True

Answer

False

Question 8

In an explosion, the total momentum of the fragments is zero because of conservation of momentum. True or False?

Accepted Answer

True

Answer

False

Question 9

In an isolated system, energy is not conserved. True or False?

Accepted Answer

False

Answer

True

Question 10

Which form of energy is directly linked to an object's motion and depends on its mass and speed?

Accepted Answer

Kinetic energy

Answer

Potential energy

Answer

Elastic energy

Answer

Thermal energy

Question 11

In an elastic collision, what is the value of the Coefficient of Restitution (COR)?

Accepted Answer

1

Answer

0

Answer

Greater than 1

Answer

Less than 0

Question 12

According to the law of conservation of momentum, what occurs to the total momentum of a closed system?

Accepted Answer

It remains constant.

Answer

It increases with time.

Answer

It decreases with time.

Answer

It becomes zero.

Question 13

Which of the following factors does NOT influence the momentum of an object?

Accepted Answer

Temperature

Answer

Mass

Answer

Velocity

Answer

Direction of motion

Question 14

In which type of collision are both momentum and energy conserved?

Accepted Answer

Elastic collision

Answer

Inelastic collision

Answer

Perfectly inelastic collision

Answer

Superelastic collision

Question 15

Which formula represents kinetic energy?

Accepted Answer

E = 1/2 mv^2

Answer

E = mc^2

Answer

E = Fd

Answer

E = Iω^2

Question 16

What is the SI unit of energy?

Accepted Answer

Joule

Answer

Newton

Answer

Kilogram

Answer

Meter

Question 17

Which of the following is NOT a type of potential energy?

Accepted Answer

Thermal energy

Answer

Gravitational potential energy

Answer

Elastic potential energy

Answer

Chemical potential energy

Question 18

Which of the following statements best describes the law of conservation of energy?

Accepted Answer

Energy can be transferred or transformed but not created or destroyed.

Answer

Energy can be created or destroyed but not transferred.

Answer

Energy is always constant and cannot change form.

Answer

Energy is lost over time and cannot be conserved.

Question 19

Which device converts mechanical energy into electrical energy?

Accepted Answer

Generator

Answer

Electric motor

Answer

Battery

Answer

Solar panel

Question 20

A ball is thrown vertically upward. At its highest point, what is true about its energy?

Accepted Answer

Its kinetic energy is zero and its potential energy is maximum.

Answer

Its potential energy is zero and its kinetic energy is maximum.

Answer

Both its kinetic energy and potential energy are maximum.

Answer

Both its kinetic energy and potential energy are zero.

Question 21

A pendulum swings back and forth without any outside force. How does the law of conservation of energy explain why the pendulum's total energy stays the same?

Accepted Answer

The pendulum's total energy, including its kinetic and potential energy, remains constant.

Answer

Energy is lost due to friction and air resistance, causing the pendulum's total energy to decrease.

Answer

The pendulum's kinetic energy stays the same, but its potential energy decreases as it swings.

Question 22

How does a hydroelectric power plant transform energy?

Accepted Answer

Gravitational potential energy to kinetic energy to electrical energy

Answer

Chemical energy to thermal energy to electrical energy

Answer

Nuclear energy to heat energy to electrical energy

Answer

Electrical energy to kinetic energy to potential energy

Question 23

A ball of mass 'm' moving with a velocity 'v' collides head-on with a stationary ball of mass '2m'. After the collision, the first ball:

Accepted Answer

Rebounds with half of its initial velocity

Answer

Rebounds with the same initial velocity

Answer

Comes to rest

Answer

Moves with double the initial velocity

Question 24

A rocket exerts a constant force on its fuel, ejecting it backward. According to Newton's third law, what force does the fuel exert on the rocket?

Accepted Answer

An equal and opposite force, propelling the rocket forward

Answer

An equal and opposite force, slowing the rocket down

Answer

No force, as the fuel is moving in the opposite direction

Answer

A force perpendicular to the direction of motion, causing the rocket to spin

Question 25

Which of the following is a unit of energy?

Accepted Answer

Joule

Answer

Newton

Answer

Meter

Answer

Second

Question 26

A pendulum swings to a maximum height 'h'. Assuming negligible air resistance, what is its speed at the bottom of its swing?

Accepted Answer

√(2gh)

Answer

√gh

Answer

2√gh

Answer

gh

Question 27

Which factors affect the momentum of an object?

Accepted Answer

Mass and velocity

Answer

Temperature and pressure

Answer

Volume and density

Answer

Shape and size

Question 28

Which of the following is a vector quantity?

Accepted Answer

Momentum

Answer

Temperature

Answer

Volume

Answer

Mass

Question 29

An explosion occurs in a sealed container. According to the law of conservation of energy, what happens to the energy released by the explosion?

Accepted Answer

Converts into heat and sound

Answer

Lost to the environment

Answer

Stored as potential energy

Answer

Annihilated

Question 30

Which of the following is the SI unit of momentum?

Accepted Answer

newtons

Answer

kilograms per second

Answer

joules

Answer

kilograms per meter

Question 31

In an elastic collision, which of the following quantities is conserved?

Accepted Answer

both momentum and energy

Answer

momentum only

Answer

energy only

Answer

neither momentum nor energy

Question 32

A ball of mass 2 kg is moving with a velocity of 5 m/s. What is its kinetic energy?

Accepted Answer

25 J

Answer

10 J

Answer

50 J

Answer

100 J

Question 33

Which of the following is NOT a type of potential energy?

Accepted Answer

kinetic energy

Answer

gravitational potential energy

Answer

elastic potential energy

Answer

chemical potential energy

Question 34

The law of conservation of energy states that energy can neither be created nor destroyed, only transformed from one form to another.

Accepted Answer

True

Answer

False

Question 35

The work done by a constant force on an object is equal to the:

Accepted Answer

change in kinetic energy

Answer

change in momentum

Answer

change in potential energy

Answer

distance traveled

Question 36

Which of the following is a vector quantity?

Accepted Answer

velocity

Answer

mass

Answer

temperature

Answer

time

Question 37

In a closed system, the total energy remains constant.

Accepted Answer

True

Answer

False

Question 38

Which of the following is the formula for impulse?

Accepted Answer

F * t

Answer

m * v

Answer

KE / m

Answer

W / t

Question 39

Which interaction does NOT involve a transformation of energy?

Accepted Answer

A magnet inducing an electric current in a nearby coil

Answer

A generator converting mechanical energy to electrical energy

Answer

A burning candle releasing chemical energy as heat

Answer

A solar cell converting light energy into electrical energy

Question 40

A car traveling at 25 m/s applies its brakes and comes to a stop over a distance of 50 m. What is the car's acceleration?

Accepted Answer

-2.5 m/s²

Answer

-1.25 m/s²

Answer

-5 m/s²

Question 41

A projectile is thrown horizontally with a velocity of 10 meters per second from a height of 10 meters. Determine the range of the projectile.

Accepted Answer

20 meters

Answer

10 meters

Answer

40 meters

Answer

30 meters

Question 42

A 1-kilogram bomb explodes, releasing 1000 kilojoules of energy. If the bomb fragments into two equal pieces, calculate the velocity of each fragment.

Accepted Answer

1414 meters per second

Answer

2000 meters per second

Answer

707 meters per second

Question 43

An electrical plant generates 1000 megawatts of electricity. If the power plant runs for 24 hours, calculate the amount of energy generated in one day.

Accepted Answer

24 gigawatt-hours

Answer

36 gigawatt-hours

Answer

48 gigawatt-hours

Answer

12 gigawatt-hours

Question 44

A 1200 kg car traveling at 20 m/s has what momentum?

Accepted Answer

24000 kg m/s

Answer

600 kg m/s

Answer

20 m/s

Answer

1200 kg m/s²

Question 45

A 5 kg block moving at 3 m/s collides elastically with a stationary 7 kg block. What will be the velocity of the 7 kg block after the collision?

Accepted Answer

2.14 m/s

Answer

5 m/s

Answer

7.5 m/s

Answer

3.75 m/s

Question 46

A 0.25 kg ball is launched vertically upward with an initial velocity of 12 m/s. What maximum height will the ball reach?

Accepted Answer

9 m

Answer

6 m

Answer

18 m

Answer

12 m

Question 47

The momentum of a 2 kg object moving at 5 m/s is:

Accepted Answer

10 kg m/s

Answer

0.4 kg m/s

Answer

25 kg m/s

Question 48

An isolated system is characterized by:

Accepted Answer

No external forces acting upon it

Answer

Constant temperature

Answer

Closed boundaries

Answer

Equilibrium

Question 49

In an elastic collision between two objects, the total kinetic energy of the system:

Accepted Answer

Remains constant

Answer

Increases

Answer

Becomes zero

Answer

Decreases

Question 50

The work done by a 50 N force applied over a displacement of 10 m at an angle of 60° to the displacement is:

Accepted Answer

250 J

Answer

125 J

Answer

1000 J

Answer

500 J

Question 51

Which of the following is NOT a form of energy?

Accepted Answer

Momentum

Answer

Potential energy

Answer

Kinetic energy

Answer

Heat

Question 52

A 1500 kg car moving at 30 m/s has what kinetic energy?

Accepted Answer

675000 J

Answer

1500 J

Answer

45000 J

Answer

30000 J

Question 53

The law of conservation of energy states that:

Accepted Answer

Energy cannot be created or destroyed, but only transferred or transformed

Answer

Energy is always lost in any process

Answer

Energy can be created from nothing

Question 54

Which of the following is a unit of energy?

Accepted Answer

Joule

Answer

Meter

Answer

Newton

Answer

Second

Question 55

In a perfectly inelastic collision, the total kinetic energy of the system:

Accepted Answer

Decreases

Answer

Remains the same

Answer

Increases

Answer

Becomes zero

Question 56

The potential energy of an object depends on its:

Accepted Answer

Height and mass

Answer

Height and velocity

Answer

Mass and velocity

Answer

Velocity and mass