Question

Give example of impulse in sport setting

Answer 1

​​​​​​Definition:Impulse is simply a measure of the force applied for a specific time. Impulse = force x time and has units Ns (Newton seconds). It is an important concept in sport because many techniques, particularly throwing activities, require the performer to apply as large a force possible for as long as possible.

Example & explanation:

Car airbags and cushioned gymnasiums are examples of using the concept of impulse to reduce the force of impact. Having great racquet head speed increases the force on a tennis ball. This decreases the impact time between the ball and racquet, thereby increasing the force of impact.

Before we can define impulse, we need to talk about the concept of momentum. Momentum is a measure of strength and a measure of how difficult it is to stop an object. An object that is not moving has zero momentum. A slow-moving, large object has a large momentum. A fast-moving, small object also has a large momentum. For example, if a ping-pong ball and a bowling ball have the same velocity, then the bowling ball has a greater momentum because it is more massive than the ping-pong ball.

This is the formula for momentum:

p=mv
But how is momentum related to impulse? When a force acts on an object for a short amount of time, impulse is the measure of how much the force changes the momentum of an object.
In this formula, Momentum (p) equals Mass (m) times Velocity (v). Momentum is a vector which is equal to the product of mass and velocity (which is also a vector).