Question

Q3. A car travels with uniform velocity of
30m/s for 6 s. The brakes are then applied
and the
car is uniformly retarded. It comes
to rest in further 10s.
a.) Draw a graph
of velocity and time
b.) Find total distance travelled by the car
at the end of journey

comes
b)
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Answer 1

Answer:

Given,

Velocity=25m/s,t=10s

we can use here Newton's third law of motion.

v

2

–u

2

=2as

0

2

–25

2

=2×(–2.5)×s⇒–625=–5×s⇒s=125m.

Answer 2

Answer:

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