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A car starts from rest and retains the acceleration of 4m/s² in 20 second . calculate its final velocity.

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User Chakshu
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Given : A car starts from rest and retains the acceleration of 4m/s² in 20 second. Calculate its final velocity.

Solution : As we know that a car starts from rest so it's initial velocity should be 0 m/s. Acceleration is 4 m/s² and time taken is 20 sec. So, we need to calculate it's final velocity which we can get it usi g the first equation of motion.

First Equation of Motion : v = u + at

Putting all the required values in the formula we will get v

  • v = 0 + 4(20)

  • v = 0 + 80

  • v = 80

Henceforth, final velocity is 80 m/sec.

User Erick R Soto
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