A motorist travelling at a speed of 18km/hr, suddenly applies the brakes and comes to rest after skidding 75m. Find the time required for the car to stop . * O t = 29.94 sec. O t = 35 sec. O t = 16.44 sec. O t = 20 sec.
Answers
Answered by
1
Correct option is A)
Given, Speed=18km/h,t=5s
a)The speed of the car in m/s=18×
18
5
=5 m/s
b) The retardation is:
a=
t
v−u
=
5
0−5
=1m/s
2
c) The velocity of the as a funcition of time 2sis:
v(t)=5−t⇒v(t)=5−2=3m/s=10.8 km/h
Answered by
0
Answer:30 second
Explanation:
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