Question

A body of mass 2kg is at rest find the impulse required to impart its velocity of 8m/s in 5s

Answer 1

Answer:

impulse=force×time

force= ma

a=velocity÷ time

=8÷5m/s2

m=2kg

impulse=2×1.6×5

=16newton per second

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Answer 2

Answer:

Explanation:

Impulse= force × time. ,mass=2kg,t=5sec ,v=8m/s

Force= mass × acceleration

= Mass× velocity/ time

=2×8/5

=16/5 N

Impulse =16/5×5 =16Ns