Master Collisions in Sports: Enhance Your Sports Science Knowledge

Question 1

Which type of collision results in a decrease in kinetic energy?

Accepted Answer

Inelastic

Answer

Elastic

Answer

Perfectly elastic

Answer

Perfectly inelastic

Question 2

In a collision, impulse is equal to the change in:

Accepted Answer

Momentum

Answer

Velocity

Answer

Kinetic energy

Answer

Mass

Question 3

In a perfectly elastic collision, the coefficient of restitution is:

Accepted Answer

1

Answer

0

Answer

Greater than 1

Answer

Less than 1

Question 4

Which of the following sports involves predominantly elastic collisions?

Accepted Answer

Billiards

Answer

Football

Answer

Boxing

Answer

Wrestling

Question 5

The SI unit of momentum is:

Accepted Answer

Newton-second

Answer

Joule

Answer

Kilogram

Answer

Second

Question 6

In a collision between two objects of equal mass, which object experiences the greater force?

Accepted Answer

Both objects experience equal force

Answer

Object with higher velocity

Answer

Object with lower velocity

Answer

Neither object experiences force

Question 7

In a perfectly inelastic collision, what happens to the total kinetic energy of the colliding objects?

Accepted Answer

Converts into other forms of energy, such as heat or sound

Answer

Remains constant

Answer

Partially lost due to friction

Answer

Transferred to the surrounding environment

Question 8

Which of the following best describes an impulsive force?

Accepted Answer

A force that acts for a very short duration and produces a large change in momentum

Answer

A force that causes an object to accelerate uniformly

Answer

A force that is perpendicular to the direction of motion

Answer

A force that is applied gradually and results in a constant change in momentum

Question 9

What is the formula for calculating impulse?

Accepted Answer

Force × Time

Answer

Energy / Time

Answer

Mass × Velocity

Answer

Work / Power

Question 10

Which factor primarily affects the magnitude of impulse?

Accepted Answer

Strength of the force and duration of its application

Answer

Coefficient of restitution

Answer

Temperature of the environment

Answer

Masses of the colliding objects

Question 11

How is the impulse-momentum theorem commonly applied in sports science?

Accepted Answer

To analyze the forces acting on athletes and predict their resulting motions

Answer

To measure the power output of an athlete

Answer

To calculate the trajectory of a thrown object

Question 12

Which of the following is a defining characteristic of an elastic collision?

Accepted Answer

Kinetic energy is conserved

Answer

Heat is generated

Answer

Momentum is not conserved

Answer

Objects stick together after impact

Question 13

The SI unit of momentum is:

Accepted Answer

kg m/s

Answer

m/s

Answer

N

Answer

J

Question 14

Which of the following is the correct equation for impulse?

Accepted Answer

Impulse = Force x Time

Answer

Impulse = Force / Time

Answer

Impulse = Momentum x Time

Answer

Impulse = Mass x Velocity

Question 15

Which of the following is an example of an inelastic collision in sports?

Accepted Answer

A tackle in American football

Answer

A pool ball hitting another ball

Answer

A soccer ball rolling into a goal

Answer

A tennis ball bouncing off a racquet

Question 16

Which of the following is a safety measure to reduce the risk of injury in a collision?

Accepted Answer

Wearing protective gear

Answer

Avoiding collisions altogether

Answer

Colliding with objects at a sharp angle

Answer

Increasing the speed of impact

Question 17

What is a method for calculating the velocity of an object after a collision?

Accepted Answer

Using the equations of motion

Answer

Observing the direction of motion

Answer

Measuring the distance traveled

Answer

Guessing

Question 18

Which of the following is NOT a consideration when designing sports equipment to reduce the impact of collisions?

Accepted Answer

The cost of the equipment

Answer

The weight of the equipment

Answer

The shape of the equipment

Answer

The materials used

Question 19

The formula for impulse is:

Accepted Answer

Force x Time

Answer

Energy x Power

Answer

Work x Efficiency

Answer

Mass x Acceleration

Question 20

The factors that affect the magnitude of impulse are:

Accepted Answer

Force and time

Answer

Time only

Answer

Force only

Question 21

An example of impulse in sports is:

Accepted Answer

Kicking a soccer ball

Answer

Rowing a boat

Answer

Running a marathon

Answer

Cycling up a hill

Question 22

Inertia is a measure of an object's:

Accepted Answer

Resistance to a change in motion

Answer

Ability to move quickly

Answer

Amount of force required to move it

Answer

Rate of acceleration

Question 23

The SI unit of momentum is:

Accepted Answer

kg m/s

Answer

m/s

Answer

N

Answer

J

Question 24

The formula for momentum is:

Accepted Answer

Mass x Velocity

Answer

Force x Time

Answer

Energy x Power

Answer

Work x Efficiency

Question 25

The law of conservation of momentum states that:

Accepted Answer

The total momentum of a closed system remains constant.

Answer

The total angular momentum of a closed system remains constant.

Answer

The total energy of a closed system remains constant.

Question 26

The momentum of an object depends on which of the following properties?

Accepted Answer

Both mass and velocity

Answer

Acceleration and mass

Answer

Velocity only

Answer

Mass only

Question 27

The impulse applied to an object during a collision is equal to:

Accepted Answer

The change in momentum of the object

Answer

The mass of the object

Answer

The force applied over time

Answer

The acceleration of the object

Question 28

In a head-on collision between two objects with equal mass, the objects:

Accepted Answer

Rebound with the same speed

Answer

Heavier object rebounds with a higher speed

Answer

Lighter object rebounds with a higher speed

Question 29

Which of the following factors does NOT affect the outcome of a collision?

Accepted Answer

Temperature

Answer

Coefficient of restitution

Answer

Velocity

Answer

Mass

Question 30

In a collision where the coefficient of restitution is 1, the collision is:

Accepted Answer

Perfectly elastic

Answer

Inelastic

Answer

Elastic

Answer

Perfectly inelastic

Question 31

Which sport involves predominantly elastic collisions?

Accepted Answer

Billiards

Answer

Rugby

Answer

Boxing

Question 32

The primary aim of the 'tackling' technique in American football is to:

Accepted Answer

Maximize the impulse applied to the ball carrier

Answer

Minimize the force applied to the ball carrier

Answer

Increase the coefficient of restitution between players

Answer

Conserve the momentum of the collision

Question 33

Which of the following statements about collisions in sports is true?

Accepted Answer

Collisions can significantly influence the outcome of a game

Answer

Collisions are always harmful and should be avoided

Answer

Collisions only occur in contact sports

Question 34

Which of the following is NOT a type of collision?

Accepted Answer

Plastic

Answer

Inelastic

Answer

Perfectly elastic

Answer

Elastic

Question 35

After a perfectly elastic collision, the total momentum of the two objects is:

Accepted Answer

Equal to the total momentum before the collision

Answer

Less than the total momentum before the collision

Answer

Zero

Answer

Greater than the total momentum before the collision

Question 36

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

Accepted Answer

Both momentum and kinetic energy

Answer

Neither momentum nor kinetic energy

Answer

Only kinetic energy

Answer

Only momentum

Question 37

In an inelastic collision, the total kinetic energy of the objects after the collision is:

Accepted Answer

Less than the total kinetic energy before the collision

Answer

Equal to the total kinetic energy before the collision

Answer

Greater than the total kinetic energy before the collision

Question 38

The coefficient of restitution (COR) for a perfectly inelastic collision is:

Accepted Answer

0

Answer

0.5

Answer

-1

Answer

1

Question 39

Which of the following is NOT a factor affecting the outcome of a collision in sports?

Accepted Answer

Temperature

Answer

Surface

Answer

Mass

Answer

Velocity

Question 40

Which type of collision occurs when there is no loss of kinetic energy?

Accepted Answer

Elastic collision

Answer

Perfectly inelastic collision

Answer

Oblique collision

Answer

Inelastic collision

Question 41

How does the coefficient of restitution relate to energy loss in a collision?

Accepted Answer

A higher coefficient of restitution indicates less energy loss.

Answer

A lower coefficient of restitution indicates less energy loss.

Answer

The coefficient of restitution does not affect energy loss.

Question 42

Which technique is crucial for reducing the risk of injury in collision sports?

Accepted Answer

Proper tackling technique

Answer

Avoiding collisions altogether

Answer

Wearing excessive protective gear

Answer

Using performance-enhancing supplements

Question 43

Describe the fundamental difference between a direct and an indirect collision.

Accepted Answer

In a direct collision, objects collide head-on; in an indirect collision, they collide at an angle.

Answer

Direct collisions involve more energy than indirect collisions.

Question 44

Which of the following is a characteristic of an inelastic collision?

Accepted Answer

Some or all of the kinetic energy is transformed into other forms of energy.

Answer

The objects rebound with the same velocity as they collided.

Answer

The total momentum of the system is not conserved.

Question 45

What is the primary purpose of a foam pit in a gymnastics facility?

Accepted Answer

To absorb impact and minimize injury risk during landings.

Answer

To improve the athlete's balance and coordination.

Answer

To provide a soft surface for practicing tumbling.

Question 46

Which of these factors DOES NOT directly influence the outcome of a collision in sports?

Accepted Answer

The elasticity of the Earth

Answer

The angle at which the objects collide

Answer

The masses of the objects involved

Answer

The speeds of the objects involved

Question 47

In an elastic collision, what happens to the total kinetic energy of the objects involved?

Accepted Answer

It remains the same

Answer

It increases

Answer

It changes into potential energy

Answer

It decreases

Question 48

What is the SI unit for impulse?

Accepted Answer

Newton-second (Ns)

Answer

Kilogram (kg)

Answer

Meter per second (m/s)

Answer

Joule (J)

Question 49

In an inelastic collision, some of the kinetic energy is:

Accepted Answer

Converted into other forms of energy, such as heat or sound

Answer

Stored as potential energy

Answer

Transferred to the environment

Question 50

The momentum of an object is calculated by multiplying its:

Accepted Answer

Mass and velocity

Answer

Energy and time

Answer

Power and distance

Answer

Force and acceleration

Question 51

The coefficient of restitution is a measure of:

Accepted Answer

How elastic a collision is

Answer

The momentum of a collision

Answer

The energy lost in a collision

Answer

The force of a collision