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A car is traveling at a speed of 30m/s .it decelerate at a rate of 12m/s .calculate the time taken for the car to come to rest.



User Ojo
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1 Answer

5 votes

approximately 2.5 seconds

To calculate the time taken for the car to come to rest, we can use the equation of motion:

v = u + at

Description:

v = final velocity (0 m/s since the car comes to rest)

u = initial velocity (30 m/s)

a = acceleration (deceleration in this case, which is -12 m/s²)

t = time

Rearranging the equation, we have:

t = (v - u) / a

Substituting the given values, we get:

t = (0 - 30) / (-12)

Simplifying the equation further:

t = 30 / 12

t ≈ 2.5 seconds

Therefore, the time taken for the car to come to rest is approximately 2.5 seconds.

User CVM
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