Question

what is the momentum in kg.m/s of a 10 kg car travelling at 20 cm/s [b] 36 km/h

Answer 1

Answer:

Dear Friend

Here is your answer

1..

Given Mass = 10 kg

i) when speed is 5 m/s then momentum

= mv= 10×5

=50 kgm/s

ii) Speed = 20 cm/s

First of all convert velocity in to m/s

which will be 20/100 = 0.2 m/s

Using Momentum = mv= 10×0.2

= 2 kg m /s

iii) Speed = 36 km/h = 10m/s

momentum = 10×10

= 100 kg m/s

2...

Change in momentum

= m(v-u)

= 1500(20-10)

= 15000 kgm/s

3..

Mass = 200 gm = 0.2 kg

momentum= 0.2× 5= 1 kg m/ s.