Question

The momentum-time graph of the moving object of mass 500 g is given below, is this
motion uniform or accelerated? If the motion is accelerated then find the acceleration
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Answer 1

Answer:

10 m/s^2

p=m×v

v=40/0.5

=80m/s

a=v/t

= 80/8

=10m/s^2

Answer 2

Answer:

mass of the object = 500g

1g = 1/1000 kg

500 g = 500/1000 = 0.5 Kg

Final momentun = 40 Kg m/s

Initial momentum = 0 Kg m/s

Rate of change of momentum = final momentum-initial momentum/ time

= 40 - 0/8 = 5 Kg m/s

Force = Rate of change of momentum

= 5 N

F = ma

a = F/m

= 5/0.5 = 10 m/s²

The motion is accelerated