Question

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a moving car along a straight line highway with speed of 126/hrs brought to a stop within a distance of 200 m. What is the retardation of the car (assumed uniform), and how long does it take for the car to stop​​

Answer 1

Answer:

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:

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