A force of 200N acting on a body of mass 20kg initially a...
A force of 200N acting on a body of mass 20kg initially at rest causes it to move a distance of 320m along a straight line for t secs. Find the value of t.
4s
6s
8s
10s
Correct answer is C
F = ma
200=20a⟹a=10m/s2
s=ut+12at2
320=(0×t)+1210t2
320=5t2⟹t2=64
t=8secs
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