Consider a football halfback with a mass of 90 kg running down the football field and encountering a collision with a defensive back. If the halfback experiences a force of 800 N for 0.9 seconds, how much impulse will he experience?

Impulse:

Explanation:

The impulse experienced by an object is given by:

Where

F is the magnitude of the force exerted on the object

is the time interval during which the force is applied

I is the impulse

For the halfback in this problem, we have:

F = 800 N is the force experienced

is the time interval

Therefore, the impulse experienced is

And this impulse is also equal to the change in momentum of the halfback.

this is poiselle's equation from fluid mechanic in physics. mech eng