Uniceangelicaantonioid
Answered

10. A person on a skateboard pushes off the ground
with their foot. This caused them to accelerate at a rate
of 5 m/s. If the person weighs 500 N with respect to
gravity, how strong were they pushed off the ground?
A. 50 N
C. 400 N
B. 250 N
D. 500 N​

Sagot :

Answer:

B. 250 N

Explanation:

If that person's weight is 500 N, then his mass would be 50 kg (500 N / 10 m/s^2 - note that we rounded off the acceleration due to gravity from 9.8 m/s^2 to 10). To find the amount of force that person exerted on the ground, F, we will be using the formula F = ma.

F = ma

F = (50 kg)(5 m/s^2)

F = 250 N