A body of mass 8kg moving with a speed of 30ms-1 is brought to rest in 2.5s by a constant retarding force. Calculate the magnitude of the force
A
240N
B
96N
C
20N
D
9N
Verified Correct Answer: B.
Physical Principles & Numerical Solution
F = ma = \(\frac{mv}{t} = \frac{8 \times 30}{2.5} = 96\)
Source: Myschool Past Questions Archive (Record #34281)