Question

A 325 kg boulder falls straight down from a cliff. The force of gravity

pulling it downward is -3185 N, while the force of air resistance acting
upward is +370 N.


Find the net force on the bolder then use 'Fnet = m a' to find its
acceleration.

F₂=3185/

Answer 1

Answer: -8.66 m/s2 (down)

Step-by-step explanation:

Find the mass of the boulder:

F = ma

m=F/a = -3125N/9.8 m/s2 = 325 kg

F net = -3125 N + 370 N = -2815 N

now you can find a:

a = F/m = -2185 N / 325 kg = -8.66 m/s2