Kinetic and Potential Energy in Biomechanics: Master Energy Concepts

Question 1

A pendulum oscillates from a height of 5 meters to a height of 1 meter. What is the change in its potential energy?

Accepted Answer

392 J

Answer

784 J

Answer

196 J

Question 2

Which of the following statements accurately describes the principle of energy?

Accepted Answer

Energy can neither be created nor destroyed, only transferred or transformed.

Answer

Energy can be created or destroyed.

Answer

Energy can only be transferred between objects.

Question 3

A person is running at a constant speed on a flat surface. What is the relationship between the kinetic energy (KE) and the potential energy (PE) of this person?

Accepted Answer

Both KE and PE are constant.

Answer

KE is constantly being converted to PE.

Answer

PE is constantly being converted to KE.

Answer

KE is constant, but PE is increasing.

Question 4

What type of energy does an object possess due to its motion?

Accepted Answer

Kinetic energy

Answer

Potential energy

Answer

Elastic energy

Answer

Chemical energy

Question 5

Which of the following accurately describes potential energy?

Accepted Answer

Energy possessed by an object due to its position or state

Answer

Energy possessed by an object due to its temperature

Answer

Energy possessed by an object due to its molecular structure

Answer

Energy possessed by an object due to its velocity

Question 6

Which factor does NOT influence the potential energy of an object?

Accepted Answer

Velocity

Answer

Height

Answer

Mass

Answer

Acceleration due to gravity

Question 7

In the SI system, what is the unit of kinetic energy?

Accepted Answer

Joule

Answer

Newton

Answer

Watt-second

Answer

Electronvolt

Question 8

Which type of energy is stored in a compressed coil spring?

Accepted Answer

Elastic potential energy

Answer

Chemical potential energy

Answer

Hydroelectric energy

Answer

Thermal energy

Question 9

How does kinetic energy vary with velocity?

Accepted Answer

Kinetic energy is directly proportional to the square of velocity

Answer

Kinetic energy is inversely proportional to velocity

Answer

Kinetic energy is independent of velocity

Question 10

What does the principle of conservation of energy state about kinetic and potential energy?

Accepted Answer

The total mechanical energy (kinetic + potential) of a closed system remains constant

Answer

Potential energy is always greater than kinetic energy

Answer

Kinetic energy can be converted to potential energy, but not vice versa

Question 11

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

Accepted Answer

Thermal energy

Answer

Gravitational energy

Answer

Chemical energy

Answer

Elastic energy

Question 12

Which of the following factors affects the kinetic energy of an object?

Accepted Answer

Mass and velocity

Answer

Charge and magnetism

Answer

Height and shape

Answer

Temperature and pressure

Question 13

Which of the following is a unit of energy?

Accepted Answer

Joule

Answer

Watt

Answer

Newton

Answer

Meter

Question 14

Which of the following is an example of a transformation from kinetic energy to potential energy?

Accepted Answer

A ball thrown into the air

Answer

A spring being compressed

Answer

A battery being charged

Answer

A car rolling down a hill

Question 15

The principle that states that the total energy of a system remains constant unless there is an external force acting on it is known as:

Accepted Answer

Conservation of Energy

Answer

Einstein's Theory of Relativity

Answer

Newton's Third Law

Answer

Law of Thermodynamics

Question 16

As a basketball is thrown upwards, what energy transformation occurs?

Accepted Answer

Kinetic energy decreases, potential energy increases

Answer

Both kinetic and potential energy increase

Answer

Kinetic energy increases, potential energy decreases

Question 17

Which factor has the most significant impact on the kinetic energy of a moving object?

Accepted Answer

Velocity

Answer

Gravity

Answer

Height

Answer

Mass

Question 18

A gymnast hanging from rings primarily possesses what type of energy?

Accepted Answer

Gravitational potential energy

Answer

Elastic potential energy

Answer

Kinetic energy

Answer

Chemical energy

Question 19

What happens to the total mechanical energy (kinetic + potential) of a system when air resistance is present?

Accepted Answer

Decreases

Answer

Remains constant

Answer

Increases

Question 20

A diver standing on a 10m platform has ______ gravitational potential energy compared to a diver standing on a 5m platform.

Accepted Answer

Twice the

Answer

Half the

Answer

Four times the

Answer

The same

Question 21

During the downward swing of a golf club, what is the primary energy transformation taking place?

Accepted Answer

Potential energy to kinetic energy

Answer

Kinetic energy to thermal energy

Answer

Kinetic energy to potential energy

Answer

Chemical energy to kinetic energy

Question 22

Two objects, A and B, have the same mass. Object A is moving twice as fast as object B.  Therefore, object A has _____ kinetic energy compared to object B.

Accepted Answer

Four times the

Answer

The same

Answer

Half the

Answer

Twice the

Question 23

A stretched elastic band used in physiotherapy primarily stores what type of energy?

Accepted Answer

Elastic potential energy

Answer

Chemical energy

Answer

Kinetic energy

Answer

Gravitational potential energy

Question 24

The Law of Conservation of Energy states that:

Accepted Answer

Energy cannot be created or destroyed, only transformed from one form to another.

Answer

Kinetic energy always equals potential energy.

Answer

Energy can be created, but not destroyed.