Question

1)
A body starts with an initial velocity of 10 m/s
and acceleration 5 m s-2. Find the distance
covered by it in 5 s.

2)
A vehicle is accelerating on a straight road. Its
velocity at any instant is 30 km h-!, after
2 s, it is 33.6 km h-l and after further 2 s, it is
37.2 km h-I. Find the acceleration of vehicle in
m s2. Is the acceleration uniform ?

3)
A body, initially at rest, starts moving with a
constant acceleration 2 m s-2. Calculate : (i) the
velocity acquired and (ii) the distance travelled
in 5 s.




please answer fast
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Answer 1

u=10m/s.

a=5m/s2

t=5s

s=ut+1/2at2

s=10*5+1/2*5*25

s=112.5m