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1.tyrone is riding his newly bought motorcye at 30m/s when he sees a cat on the road ahead.he applied immediately the brakes and comes to a stop in 3.0 s.what was the acceleration of his motorcycle?
Given:
asked:
solution:
final answer:

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Sagot :

Answer:

Given:

vi ( initial velocity ) = 30 m/s

vf ( final velocity ) = 0 m/s ( comes to stop )

t ( time ) = 3 s

a ( acceleration ) = ? unknown

Solution:

We can use the formula ( a = vf - vi / t )

a = vf - vi / t

  = 0 m/s - 30 m/s / 3s

  = - 30 m/s / 3 s

  =  - 10 m/s² ( decelerating )

Answer:

The acceleration of the car is equal to  - 10 m/s²  ( decelerating )

It is negative since it is moving in opposite direction making it decelerates.