| 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.
Share
| 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.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
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:
retardation in this case will be 0.521 m/s^2 (SI)