Question

a car along a straight line with a speed of 90kmph it is brought to rest within the distance of 20 m calculate the retardation and time taken displacement​

Answer 1

Answer:

120

Explanation:

₹('(3838rjckrkfirusuc

Answer 2

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