A stationary object of mass 4kg is set in motion by a net force of 5ON. If the object attains is speed of 5ms-1 in time. Calculate the value of t.
-
A.
0.20s -
B.
0.40s -
C.
0.63s -
D.
0.80s -
E.
1.30s
Correct Answer: Option B
Explanation
F = ma = MV/t ∴ t = MV/F = 20/50 = 0.40s