Question

Max kicks a soccer ball with average force of 1400 N, and his foot remains in contact with the ball for a time of 0.0079 seconds. What is the impulse of this force?

Answer 1

Considering the definition of impulse, the impulse of the force is 11.06 N×s.

Impulse

Impulse is a term that quantifies the overall effect of a force acting over time.

In other words, the mechanical impulse of a force relates said force to the duration of its action. It is a vectorial magnitude that has the direction and sense of the force that produces it.  

The impulse I is the product between a force and the time during which it is applied:

I= force× time

The unit of the impulse is the N×s (newton per second).

This case

In this case, you know:

• Force= 1400 N
• Time= 0.0079 seconds

Replacing in the definition of impulse:

I= 1400 N× 0.0079 s

Solving:

I= 11.06 N×s

The impulse of the force is 11.06 N×s.

Learn more about impulse:

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