Question

If a car at rest accelerates uniformly to a speed of 144 kilometre per hour and 20 seconds it covers a distance of

Answer 1

Answer:

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explanation;

Given

u=0

v=144kmph=144×

18

5

=40m/s

t=20sec

We know,

v=u+at

40=a×20

a=2m/s

2

Now,

s=ut+

2

1

at

2

s=

2

1

at

2

=

2

1

×2×20 power 2

=400m