Question

5. A force of 5 N acts on a body of mass 2 kg at rest. The body attains a velocity of 20 m/s. The time for which the force acts on the body is​

Answer 1

Answer:

Explanation:

the formula for time period is,

             mass( final velocity - initial velocity)

Force = -------------------------------------------------            (this is whole divided ok)

                              time taken

substituting the given values we get,

5 = 2(20 - 0) /time

5 = 40/time

time = 8 seconds

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Answer 2

Answer:

Explanation: force=5N

Mass=2kg

Velocity=20m/s

Time= ?

Force=ma

F=mv/t

5=2×20/t

5=40/t

t=40/5

t=8 seconds