Question

the velocity of an object of mass 100 kg is increased from 5 m/s to 8 m/ s in 6 s.find out the amount of force acting on it​

Answer 1

Answer:

Mass of object, m=100kg; initial velocity, u=5ms

−1

; final velocity, v=8ms

−1

; time, t=6s

Initial momentum =mu=100×5=500Ns

Final momentum =mv=100×8=800Ns

Force exerted on the object

F=

t

mv−mu

=

6

800−500

=

6

300

=50N

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