Physics- Acceleration

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fnoerran12

Science

Description

A car traveling with an initial velocity of -25 m/s changes velocity to -35 m/s in a time of 10.3s. Is the constant acceleration of the car positive or negative in this problem? Explain why. 

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Explanation & Answer

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intial velocity=-25m/s final velocity=-35m/s

time=10.3

acceletion=(final velocity-initial velocity)/time

=-10/10.3

=-0.9709m/s^2

deceleration =0.9709

the acceration is negative because the vehicle is decelarating

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