(1) What is the momentum in kg.m/s of a 10 kg car travelling at
(a)5m/s
(B)20cm/s
(C)36km/h?
(2) What the change in momentum of a car weighting 1500 kg when it's speed increases from 36 km/h to 72 km/h uniformly.
(3) Calculate the momentum of a toy car of mass 200 g moving with a speed of 5m/s .
20pts☺☺☺
(a)5m/s
(B)20cm/s
(C)36km/h?
(2) What the change in momentum of a car weighting 1500 kg when it's speed increases from 36 km/h to 72 km/h uniformly.
(3) Calculate the momentum of a toy car of mass 200 g moving with a speed of 5m/s .
20pts☺☺☺
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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.
Please see the attached picture..
Sorry please see 1st question (i) part
M = 10 kg
V = 5m/s
P = M × V
=10×5
= 50 kg m/s
HOPE IT HELPS YOU..
REGARDS
@sunita