Question

A car moves with velocity of 20 m/s and with acceleration of 5 m/s2. What is its speed after 5 second?

Answer 1

Answer:

Acceleration is the rate of change of velocity.

So in the question it's given that the rate of change of velocity is 20 m/s so it should be 20m/s^2

But I think I misunderstood the question so below is what you can do to get the acceleration.

If you have velocity V1 at a time suppose T1 and velocity V2 at a different time T2 then

Acceleration = (V2-V1) /(T2-T1)

So if the speed change 20 m/s in 5 sec then

Acceleration = (20-0)/(5–0)

= 4 m/s^2

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Answer 2

Answer:

Acceleration is the rate of change of velocity.

So in the question it's given that the rate of change of velocity is 20 m/s so it should be 20m/s^2

But I think I misunderstood the question so below is what you can do to get the acceleration.

If you have velocity V1 at a time suppose T1 and velocity V2 at a different time T2 then

Acceleration = (V2-V1) /(T2-T1)

So if the speed change 20 m/s in 5 sec then

Acceleration = (20-0)/(5–0)

= 4 m/s^2

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Explanation:

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