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
Correct Answer: Option B
Explanation
F = ma = (frac{mv}{t} = frac{8 times 30}{2.5} = 96)