Question

when a force acts on a body of mass 2 kg the changes in its velocity is 20 cm/s per second. the magnitude of force is _____ N.​

Answer 1

Answer:

40N

Explanation:

Mass, m=2kg

Initial velocity, u=0

Final velocity, v=2m/s

Change in velocity, Δv=v−u=2m/s

Time interval, Δt=0.1s

Acceleration, a=ΔtΔv=0.12=20m/s2

Force, F=ma=2kg×20m/s2=40N

Answer 2

Explanation:

Mass, m=2kg

Initial velocity, u=0

Final velocity, v=2m/s

Change in velocity, Δv=v−u=2m/s

Time interval, Δt=0.1s

Acceleration, a=

Δt

Δv

=

0.1

2

=20m/s

2

Force, F=ma=2kg×20m/s

2

=40N