Question

a 10.0 kg ball falling at 10.0 m/s hits a mattress and comes to a complete stop in 0.5 s. What force does the mattress exert to stop the ball?

A. 10 N
B. 20 N
C. 100 N
D. 200 N @michele_laino :)

Answer 1

here we have to apply the theorem of the Impulse of a Force F. So we can write this:
\[\Large F\Delta t = mv\]
and then:
\[\Large F = \frac{{mv}}{{\Delta t}} = \frac{{10 \times 10}}{{0.5}} = ...Newtons\]

Answer 2

ok! so we get 200! so 200 N is our solutoin?

Answer 3

yes! that's right!

Answer 4

yay!! :) thanks!

Answer 5

:)