Question

a car moving along a straight Highway with a speed of 180 km/hr is brought to a stop within a distance of 200m . what is the retardation of the car 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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