Question

A car with velocity of 25m/s retards at the rate of 2 m s -2 .what will be velocity after 6 seconds.
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Answer 1

SOLUTION :

INITIAL VELOCITY (u) = 25 m/s

ACCELERATION (a) = 2 m/s²

TIME (t) = 6 sec

FINAL VELOCITY (v) = v

FROM FIRST EQUATION OF MOTION ,

$v = u + at \\ \\ = > v = 25 + - 2(6) \\ \\ = > v = 25 - 12 = 13 \: \frac{m}{s}$

HOPE IT HELPS !!!!

Answer 2

Answer:

a = 2m/s^2

v = 25m/s

t = ??

a = v/t

t = a×v

t = 50.

after 6 seconds

v = a/t

v = 2/50=1/25=0.004m/s

this is ur answer and please tell me if it is wrong