Question

| A car moving along straight highway with a speed of 26 km/hr is brought to stop within a distance of 50 meter what is the retardation of car. How long does the car take to stop.​

Answer 1

Explanation:

u=126 km/h=126×

18

5

m/s=35m/s

v=0

s=200m

Newton's Equation of motion

v

2

−u

2

=2as

0

2

−35

2

=2a(200)

a=−3.0625m/s

2

Also

v=u+at

0=35−3.06t

t=11.4s

Answer 2

Answer:

retardation in this case will be 0.521 m/s^2 (SI)