Editor Staff asked 1 year ago
The velocity of a body, moving in a plane, changes from 3î to 3î + 7ĵ in 10s. What is the acceleration of the body?
(a) 0.7ĵ
(b) 0.7î
(c) 0.33î + 7ĵ
(d) 0.3î + 7ĵ
The question was asked in an interview for internship.
My question comes from Motion in a Plane with Constant Acceleration topic in portion Motion in a Plane of Physics – Class 11
Select the correct answer from above options
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Editor Staff answered 1 year ago
The correct answer is (a) 0.7ĵ
To explain I would say: The acceleration of a body is the rate at which the velocity changes with time. Here, the change in velocity is 7ĵ. The total time taken is 10s. Hence, the acceleration = change in velocity/time = 0.7ĵ.
