Question

A car is in rest motion after start it run on 30m/s find the time it accerlation is 4m/s

Answer 1

Explanation:

Hello

car is at rest

u = 0

v = 30m/s

a = 4m/s^2

v = u+at

30 = 4t

t = 7.5 sec

Hope it helps uh!!

Answer 2

$\large \underline{ \underline{ \sf \: Solution : \: \: \: }}$

Given ,

$\star$ Initial velocity (u) = 0 m/s

$\star$Final velocity (v) = 30 m/s

$\star$Acceleration (a) = 4 m/s²

We know that ,

$\fbox{ \fbox{ \large{ \sf Acceleration = \frac{ \: v - u \: }{t} }}}$

$\implies \sf 4 = \frac{30 - 0}{t} \\ \\ \implies \sf t = \frac{30}{4} \\ \\ \implies \sf t = 7.5 \: \: sec$

$\therefore$The required value of time is 7.5 sec