body starting from rest and moving with an uniform acceleration of 3 m/s²..What is its velocity after 15s?

□ The Final velocity of body = 45 m/s

Initial velocity of body = 0 m/s

Acceleration of body = 3 m/s²

Time taken by body = 15 sec

Final velocity of body = ?

Here in this question we are provided that a body is in rest so it's initial velocity will be 0 m/s (because from rest), Acceleration of body is 3 m/s², and Time taken is also given which is 15 sec.

 To calculate the Final velocity of body we'll use the first equation of motion which says v = u + at

Where,

From first equation of motion

Hence, the Final velocity of body is 45 m/s.

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