Easy physics (Asmaa's question)
Level
pending
A body moves according to the relation V = 4 + 2 t, where t is the time. Find the displacement coverd by the body after 20 seconds.
280
480
400
800
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1 solution
V = U + at
Newton's first law of motion
Therefore 4 is the initial velocity and 2 is the acceleration of the object,
V^2 = U^2 + 2as
Newton's third law of motion
(4+2 20)^2 = 4^2 = 2 2*s
Then (s) = 480