Work and Energy Test

Result

Work and Energy Test - 12

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Question 1

1 / -0

Use the following information to answer the next question.

A moving ball possesses kinetic energy, whereas a stationary ball does not possess any kinetic energy.

A soccer ball moving on a horizontal ground stops after some time i.e., its kinetic energy decreases.

The kinetic energy of the soccer ball decreases because it gets converted into

potential energy

thermal energy

light energy

electrical energy

Solution

When the soccer ball moves, frictional force will resist its motion. The action of frictional force on the ball converts the kinetic energy of the ball into heat energy.

The correct answer is B.

Why alternative A is wrong:

The potential energy of the ball remains constant when it moves on a horizontal ground.

Why alternative C and D are wrong:

The energy possessed by the soccer ball does not get converted in to light energy or electrical energy.

Question 2
1 / -0

The energy possessed by an object by virtue of its motion is termed as

A
potential energy

B
chemical energy

C
kinetic energy

D
atomic energy

Solution

Kinetic energy is the energy associated with moving objects i.e., a moving object possesses kinetic energy. For this reason, it is also known as the energy of motion. Hence, the energy possessed by an object by virtue of its motion is termed as kinetic energy.

The correct answer is C.

Why alternative A is wrong:

Potential energy is the energy stored in an object by virtue of its position or configuration.

Why alternative B is wrong:

Chemical energy is the energy stored in the bonds of chemical compounds. It is released or absorbed during chemical reactions.

Why alternative D is wrong:

The energy possessed by the nucleus of an atom is termed as atomic energy. It is released during the disintegration of the nucleus.