Question

Two friends are pulling a 75 kg sled across a frozen pond on a windy day. Amy pulls with 175 N and Naomi pulls with 125 N in the same direction. There is a frictional force of 140. N and the wind pushes back on the sled with a force of 120. N. What is the sled's acceleration?

A. 3.04 m/s^2 right
B. 9.4 m/s^2 left
C. 2.3 m/s^2 left
D. 0.53 m/s^2 right

Answer 1

See below

Step-by-step explanation:

NET forward force = 175 + 125 -140 -120 = 40N

F = ma

40 = 75 * a

a = 40 / 75 = .53 m/s^2 to the right (? <===if they are pulling to the right)