A force acting on a body causes a change in the momentum of the body from 12kg ms-1 to 16kg ms-1 in 0.2s. calculate the magnitude of the force
-
A.
140.0N -
B.
20.0N -
C.
4.0N -
D.
0.8N
Correct Answer: Option B
Explanation
F = (frac{mv – mu}{t} = frac{16 – 12}{0.2} = 20N)