Question

For a body starting from rest, what is the displacement of the body in 10 seconds, when itacquires a speed of 4 m/s in 2 seconds?
(a) 25 m (b) 50 m (c) 500 m (d) 100 m

Answer 1

Answer:

d) 100 m

GiveN:

Initial velocity (u )= 0m/s

Velocity after 2s, (v )= 4m/s

Acceleration (a) = (v - u)/t = (4-0)/2 = 2m/s^2

Under uniformly accelerated motion,

After time( t )= 10s

FormulA:

S = ut + (1/2)at^2

SolutioN:

S = 0 + (1/2) x 2 x (10^2) = 100m

S = 100m

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Answer 2

Answer:

Explanation:

Answer is 100m