Forces in Sport: Master the Fundamentals for Enhanced Performance

Question 1

State Newton's Third Law of Motion.

Accepted Answer

For every action, there is an equal and opposite reaction.

Answer

The acceleration of an object is directly proportional to the net force acting upon it.

Answer

An object at rest will remain at rest unless acted upon by an unbalanced force.

Answer

The force between two charged particles is directly proportional to the product of their charges.

Question 2

Which factor does NOT influence the frictional force between two surfaces?

Accepted Answer

The speed of the moving object

Answer

The nature of the surfaces

Answer

The area of contact between the surfaces

Answer

The temperature of the surfaces

Question 3

Provide an example of drag.

Accepted Answer

The force that opposes an airplane's motion through the air

Answer

The force that slows down a car when it brakes

Answer

The force that keeps a ball in the air when thrown

Answer

The force that allows a boat to float on water

Question 4

Provide an example of lift.

Accepted Answer

The force that keeps a bird in the air

Answer

The force that causes a car to skid on a wet road

Answer

The force that opposes a boat's motion through water

Answer

The force that causes a parachute to open

Question 5

Provide an example of a centripetal force.

Accepted Answer

The force that keeps a planet in orbit around the sun

Answer

The force that causes a ball to bounce

Answer

The force that opposes an airplane's motion through the air

Answer

The force that causes a person to fall down

Question 6

Which property measures an object's resistance to deformation?

Accepted Answer

Stiffness

Answer

Density

Answer

Hardness

Answer

Tensile strength

Question 7

Which of the following is NOT a Newton's Law of Motion?

Accepted Answer

Momentum is conserved in the absence of an unbalanced force.

Answer

An object at rest remains at rest, or if in motion, stays in motion at constant speed and in a straight line.

Answer

The acceleration of an object is directly proportional to the net force acting on it.

Answer

Every action has an equal and opposite reaction.

Question 8

Which force acts opposite to the direction of motion of an object moving through a fluid?

Accepted Answer

Drag

Answer

Gravity

Answer

Friction

Answer

Lift

Question 9

What is the unit of force in the International System of Units (SI)?

Accepted Answer

Newton (N)

Answer

Joule (J)

Answer

Watt (W)

Answer

Pascal (Pa)

Question 10

Which factor does NOT influence the amount of friction between two surfaces?

Accepted Answer

Air temperature

Answer

Surface roughness

Answer

Normal force

Answer

Area of contact

Question 11

Which principle explains the upward force experienced by a spinning object, like a discus?

Accepted Answer

Magnus Effect

Answer

Newton's First Law

Answer

Newton's Second Law

Answer

Newton's Third Law

Question 12

Which technique helps to reduce drag in swimming?

Accepted Answer

Streamlining the body

Answer

Wearing fins

Answer

Increasing body size

Answer

Using paddle strokes

Question 13

Which sport utilizes lift force to achieve flight?

Accepted Answer

Hang gliding

Answer

Sailing

Answer

Cycling

Answer

Swimming

Question 14

Which term describes the force that opposes the movement of an object across a surface?

Accepted Answer

Friction

Answer

Drag

Answer

Gravity

Answer

Normal force

Question 15

Which of the following best exemplifies a frictional force in a sports context?

Accepted Answer

The force that obstructs a ball's movement as it rolls on a track

Answer

The force that assists a swimmer's movement through water

Answer

The force that draws a skydiver back towards the earth

Answer

The force that propels a cyclist forward

Question 16

According to Newton's First Law of Motion, an object at rest will remain at rest, and an object in motion will persist moving with constant velocity unless acted upon by a force that is unbalanced.

Accepted Answer

True

Answer

False

Question 17

A javelin thrower utilizes a preparatory backward swing to accumulate momentum before releasing the javelin.

Accepted Answer

This exemplifies Newton's Second Law of Motion

Answer

This exemplifies Newton's First Law of Motion

Answer

This exemplifies Newton's Third Law of Motion

Answer

This exemplifies drag

Question 18

Which of the following is an advantage of utilizing a streamlined shape in sports?

Accepted Answer

Diminished drag

Answer

Enhanced lift

Answer

Elevated friction

Answer

Improved thrust

Question 19

The force impeding a projectile's flight is

Accepted Answer

Drag

Answer

Gravity

Answer

Lift

Answer

Thrust

Question 20

Which of the following is not a force?

Accepted Answer

Momentum

Answer

Normal force

Answer

Magnetic force

Answer

Frictional force

Question 21

The force propelling a rocket is

Accepted Answer

Thrust

Answer

Drag

Answer

Lift

Answer

Gravity

Question 22

Drag force primarily depends on which key factors?

Accepted Answer

Object's mass, speed, and shape

Answer

Object's speed and shape

Answer

Object's mass and speed

Answer

Object's shape and density

Question 23

When an object is projected vertically upwards, its velocity at the highest point of its trajectory is:

Accepted Answer

Zero

Answer

Maximum

Answer

Minimum

Answer

Constant

Question 24

Terminal velocity of an object in free fall is achieved when:

Accepted Answer

Drag force equals gravitational force

Answer

Drag force exceeds gravitational force

Answer

Gravitational force exceeds drag force

Answer

Buoyant force equals gravitational force

Question 25

Which of the following is an effective technique to reduce drag force in sports?

Accepted Answer

Streamlining equipment and clothing

Answer

Increasing surface area

Answer

Wearing loose-fitting clothing

Answer

Decreasing speed

Question 26

According to Newton's Second Law of Motion, the relationship between force (F), mass (m), and acceleration (a) is correctly expressed as:

Accepted Answer

F = m * a

Answer

F = m * v

Answer

a = F * m

Answer

v = F / m

Question 27

Which of the following factors does NOT influence the magnitude of frictional force?

Accepted Answer

Fluid density

Answer

Surface roughness

Answer

Normal force

Answer

Coefficient of friction

Question 28

In the context of swimming, which force acts in opposition to a swimmer's forward motion?

Accepted Answer

Drag

Answer

Lift

Answer

Weight

Answer

Thrust

Question 29

A soccer player kicks a ball with a force of 200 N, resulting in an acceleration of 10 m/s^2. Calculate the mass of the ball.

Accepted Answer

2 kg

Answer

20 kg

Answer

200 kg

Answer

Insufficient information provided

Question 30

Which of the following statements accurately describes lift?

Accepted Answer

Lift is a force generated perpendicular to the direction of motion

Answer

Lift always exceeds weight for an object in flight

Answer

Lift is solely present in fluids

Answer

Lift acts in the same direction as drag

Question 31

In a pole vault event, the primary purpose of the pole is to:

Accepted Answer

Store and release potential energy

Answer

Generate thrust force for propulsion

Answer

Reduce drag on the vaulter's body

Answer

Create lift to elevate the vaulter

Question 32

Which of the following is NOT a type of force that can influence human movement?

Accepted Answer

Magnetic force

Answer

Gravitational force

Answer

Electrostatic force

Answer

Frictional force

Question 33

What is the standard unit of measurement for force in the International System of Units (SI)?

Accepted Answer

Newton (N)

Answer

Meter (m)

Answer

Second (s)

Answer

Kilogram (kg)

Question 34

According to Newton's Second Law of Motion, how is force related to acceleration?

Accepted Answer

Force is directly proportional to acceleration.

Answer

Force is inversely proportional to acceleration.

Answer

Force is equal to acceleration.

Answer

Force is independent of acceleration.

Question 35

Which of the following accurately describes the nature of friction?

Accepted Answer

Friction always opposes motion between surfaces in contact.

Answer

Friction always acts in the same direction as the applied force.

Answer

Friction is a force that helps objects move more easily.

Answer

Friction is independent of the type of surfaces in contact.

Question 36

Which factor primarily influences the amount of drag experienced by an object moving through a fluid?

Accepted Answer

The speed of the object.

Answer

The weight of the object.

Answer

The density of the object.

Answer

The shape of the object.

Question 37

Which of the following forces is NOT typically considered to act on an airplane in flight?

Accepted Answer

Buoyancy

Answer

Drag

Answer

Weight

Answer

Thrust

Question 38

What is a common example of a force couple in everyday life?

Accepted Answer

Opening a door with a doorknob.

Answer

Throwing a ball.

Answer

Pushing a wall.

Answer

Lifting a weight straight up.

Question 39

How does the coefficient of friction impact the angle of repose?

Accepted Answer

A higher coefficient of friction results in a larger angle of repose.

Answer

The coefficient of friction has no influence on the angle of repose.

Answer

A higher coefficient of friction results in a smaller angle of repose.

Question 40

Which of these factors has the LEAST impact on the amount of lift generated by an airfoil?

Accepted Answer

Temperature

Answer

Angle of attack

Answer

Shape of the airfoil

Answer

Density of the air

Question 41

How does Newton's Third Law of Motion explain the interaction between athletes and the ground during sports activities?

Accepted Answer

It explains that for every action force exerted by an athlete on the ground, there is an equal and opposite reaction force from the ground back on the athlete.

Answer

It determines the maximum force an athlete can generate.

Answer

It predicts the path of a ball after it is thrown.