A 10.0 kg block on a smooth horizontal surface is acted upon by two forces: a horizontal force of 70 N acting to the left and a horizontal force of 30 N to the right. The acceleration of the block will be A) 2.3 m/s² to the right. B) 4.0 m/s² to the right. C) 10.0 m/s² to the left. D) 4.0 m/s² to the left.

Question

Quizplus · Accepted Answer

The net force acting on the block is the difference between the two forces:
70 N - 30 N = 40 N to the left

Using Newton's second law, we can find the acceleration of the block:

F_net = m*a
a = F_net/m = 40 N / 10.0 kg = 4.0 m/s^2 to the left

Therefore, the answer is D: 4.0 m/s^2 to the left.

A 100 Kg Block on a Smooth Horizontal Surface Is Acted