a car is moving with velocity of 54km/h
the Kinetic energy of a boy of mass 40kg sitting in the car is
a)4500 j
b)450
c)0.45
d)45
Answers
Answered by
69
First we have to convert the velocity into m/s from km/h.
Velocity in m/s = 54 × (5/18) = 15 m/s.
Kinetic Energy = (1/2) m v^2
= (1/2) 40 × 15 × 15
= 4500 J
-WonderGirl
Velocity in m/s = 54 × (5/18) = 15 m/s.
Kinetic Energy = (1/2) m v^2
= (1/2) 40 × 15 × 15
= 4500 J
-WonderGirl
Answered by
10
Answer:
v=54/1hr
54000/3600=15m/s
by using ke=1/2mv^2 we will get 4500j
Explanation:
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