WAEC - Physics (1996 - No. 11)
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.
0.20s
0.40s
0.63s
0.80s
1.30s
คำอธิบาย
F = ma = MV/t ∴ t = MV/F = 20/50 = 0.40s