Impulse and Force in Sports

The video tutorial by Paul Stockdale from ABC PE explains the concept of impulse, defined as the change in momentum of a body, and its equation: Force times time. It discusses how impulse is applied in sports to increase momentum, using examples like baseball and discus. The tutorial also covers how impulse can be used to safely receive forces, with practical demonstrations involving eggs and gymnastics. Cricket examples illustrate the difference in impulse between a block and a cover drive. The video concludes with an explanation of impulse in vertical jump tests and offers additional resources.

What is the definition of impulse in physical education?

• Impulse is the change in mass of a body.

• Impulse is the change in momentum of a body.

• Impulse is the change in velocity of a body.

• Impulse is the change in force applied to a body.

Which equation represents impulse?

• Impulse = Mass / Velocity

• Impulse = Force x Time

• Impulse = Mass x Velocity

• Impulse = Force / Time

How do athletes increase impulse in sports like baseball?

• By applying a smaller force over a shorter time.

• By decreasing the velocity of the ball.

• By reducing the mass of the ball.

• By applying a greater force over a longer time.

In sports, what technique helps in maximizing impulse?

• Decreasing the force applied.

• Reducing the time of contact.

• Following through with the motion.

• Stopping the motion abruptly.

How can impulse be used to reduce force when catching a ball?

• By increasing the mass of the ball.

• By decreasing the time over which the ball is caught.

• By increasing the time over which the ball is caught.

• By applying more force to the ball.

What is the benefit of landing with bent knees in gymnastics?

• It decreases the time of force application.

• It increases the time over which force is applied, reducing impact.

• It increases the force on the knees.

• It decreases the momentum of the gymnast.

What happens when you catch an egg with 'hard hands'?

• The egg is less likely to break.

• The egg is more likely to break.

• The force on the egg is reduced.

• The time of force application is increased.

Why is it important to increase the time over which force is applied when landing from a jump?

• To increase the momentum of the body.

• To decrease the force on the legs.

• To decrease the velocity of the body.

• To increase the force on the legs.

In a vertical jump test, how can athletes avoid injury upon landing?

• By decreasing the time over which force is received.

• By applying more force to the ground.

• By increasing the time over which force is received.

• By landing with straight legs.

What is the role of impulse in a vertical jump test?

• To decrease the force on landing.

• To increase the height of the jump.

• To decrease the time of the jump.

• To increase the speed of the jump.