A body of mass 2kg moving vertically upwards has its velocity increased uniformly from 10ms...
PHYSICS
JAMB 1997
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]
- A. 15N
- B. 20N
- C. 35N
- D. 45N
Correct Answer: C. 35N
Explanation
F = mg + ma
F = 2 [10 + \(\frac{(40 - 10)}{4}\)]
F = 35 N
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