Kinematics Question 25

Question: A plane is revolving around the earth with a speed of 100 km/hr at a constant height from the surface of earth. The change in the velocity as it travels half circle is [RPET 1998; KCET 2000]

Options:

A) 200 km/hr

B) 150 km/hr

C) 1002km/hr

D) 0

Show Answer

Answer:

Correct Answer: A

Solution:

Δv=2vsin(θ2)=2×v×sin90

=2×100=200 km/hr



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