Question

A car is moving on road with a velocity of 100 metre second brake apply and deaccelerator produce of 5 metre per second for 15 seconds find the velocity

Answer 1

ANSWER

Velocity of moving vehicle=v

0

and decceleration =a

Final velocity of the vehicale =0 (As it stops)

Let the stopping distance be s

Then applying the third equation of motion we have:

v

2

=v

0

2

+2(−a)s

⇒0=v

0

2

−2as

⇒s=

2a

v

0

2

→ Expression for stopping distance.

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