KinematicsHard
Question
If a car at rest accelerated uniformly to a speed of 144 km/hour in 20 second it covers a distance :
Options
A.400m
B.1440m
C.2880m
D.25m
Solution
u = 0, v = 144km/hour = 144 ×
m/sec
= 40 m/sec
v = u + at
⇒ a =
= 2m/sec2
∴ s = ut +
at2
× 2 × (20)2 = 400m
m/sec= 40 m/sec
v = u + at
⇒ a =
= 2m/sec2∴ s = ut +
at2× 2 × (20)2 = 400mCreate a free account to view solution
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