Question

10. The velocity of a body depends on time according to
the equation v = 20 +0.1t^2 .The body is undergoing
(a) Zero acceleration
(b) Uniform acceleration
(c) Uniform retardation
(d) Non-uniform acceleration
11. A body starting from rest moves with uniform
acceleration. The distance covered by the body in
time t is proportional to
(a) t^2 (b) t^3(c) t^3/2 (d) √t
12. The displacement of the body as a function of time is
s=5t^2-6t. The time at which the velocity of the body
becomes zero is
(a)3/5s
(b)2/5 s
(c)2s. (d) 1s​

Answer 1

Answer:

10.(a)11.(d)because length is inversely proportionate to square root of time.12.(a)