Calculating Force problem

  • #1

Homework Statement


A high jumper with a body weight of 800N exerts a force of 3 kN against the ground during takeoff.
How much force is exerted by the ground on the high jumper?

Homework Equations


f=m x a
a=f/m

The Attempt at a Solution


I converted 800n in to KN giving me 0.8

I then divided a=3kn/0.8kn

is this right?

if not, how do i fix the issue
 

Answers and Replies

  • #2
Doc Al
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Hint: It's a trick question! (Consider Newton's 3rd law.)
 
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Likes pennywise1234
  • #3
so 3kn, because every action has equal and opposite reaction. thank you
 

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