Question

Question #51a0d

Answer 1

`a = 10.6 m.s⁻²`

Explanation:

Calculate the resultant force (which is the larger pushing force minus the smaller friction force):
`F = 89 - 4 = 85 N`

Use Newton's Second Law of motion (for constant mass) to calculate the acceleration:
`F = ma ⇒ a = F/ m = 85 / 8 = 10.6 m.s⁻²`