Question

A car was moving at 10m/s. After applying brakes it stops in 4s. If it moves with uniform retardation, 1. Draw its velocity time curve 2. Find its distanced travell​

Answer 1

Answer:

1.Curve not possible right now.

2.60 meters

Explanation:

U=10 m/s

t=4 s

v=0 (car stops)

S=?

v=u+at

Substituting values:-

0=10 + a x 4

-10=4a

$\frac{-10}{4}$=a

a= -2.5

S = ut + $\frac{at^{2} }{2}$

Substituting values:-

S =   (10 x 4) + (2.5 x 16)/2

S =  40 + $\frac{40}{2}$

S =  40 + 20

S = 60 m

Side Note: I am aspiring to become a teacher please comment honestly