Question

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

Answer 1

$\huge{\mathfrak{\green{\star{Answer}}}}$

Accelaration = 4m/s^2

U=0m/s

V=30m/s

Time=?

$a = \frac{v - u}{t} \\ 4m \: per \: second {}^{2} = \frac{30m \: per \: second - 0}{time}$

Time= 7.5second

Answer 2

Answer:

initial velocity = 0 m/s (as car is in rest)

final velocity= 30 m/s

acceleration= 4m/s^2

by using v=u+at

30 = 4 . t

t= 30÷4

t= 7.5