Question

a car starting from rest acquires the velocity of 54 km per hour in 5 seconds calculate (1) its acceleration and (2) distance moved by it

Answer 1

HEY BUDDY..!!!

HERE'S THE ANSWER..

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⏺️A car starting from rest means it's initial velocity is 0 , i.e u = 0

=> v ( final velocity ) = 54 km / h = 54 × 1000 / 3600 m /s

=> v ( final velocity ) = 15 m /s

=> t = 5 second

So ,

( a )

=> a = v - u / t

=> a = 15 / 3

=> 3 m / s^2

( b )

=>s = u × t + 1 / 2 a × t^2

=> s = 1 / 2 a × t^2

=> s = 1 / 2 × 3 × 25

= 37.5 m

HOPE IT HELPS..

HAVE A NICE DAY..

:-)

Answer 2

Answer:

use the formula a= v-u /T