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A body of mass 2kg moving vertically upwards has its velocity increased uniforml...


Question

A body of mass 2kg moving vertically upwards has its velocity increased uniformly from 10ms-1 to 40ms-1 in 4s. Neglecting air resistance, calculate the upward vertical force acting on the body.[g = 10 ms-1]

Options

A) 15N

B) 20N

C) 35N

D) 45N


The correct answer is C.

Explanation:

F = mg + ma

F = 2 [10 + \(\frac{(40 - 10)}{4}\)]

F = 35 N


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