if a car travel 21s with a velocity changes from 70 M per second to 10 metre per second in 20 second find acceleration ?
if a car travel 21s with a velocity changes from 70 M per second to 10 metre per second in 20 second find acceleration ?
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Answer:
a) u=20m/s,
v=40m/s,
t=5s
a= v−ut
=
540−20
= 520
=4m/s 2
(b) Displacement of the car
s=ut+1/2at 2
=20×5+1/2×4×(5) 2
=150m
Step-by-step explanation:
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