Solve Impulse Experienced by 70kg Person Jumping 5m

[phintastic]

im reviewing for my final tomorrow, and there is a question that asks for the impulse experienced if a 70kg person lands on firm ground and stops after jumping from a height of 5m. what equation should i use to solve this?

 

[PhanthomJay]

im reviewing for my final tomorrow, and there is a question that asks for the impulse experienced if a 70kg person lands on firm ground and stops after jumping from a height of 5m. what equation should i use to solve this?

Start with writing down the equation for impulse. Impulse= ?

 

[phintastic]

i don't know the equation for impulse, that's my main problem :P

 

[danago]

$$I = \Delta p = F\Delta t$$

Where I is impulse, and p is momentum.

So impulse is a change in momentum, or the product of a force and the time period over which it acts.