Question

15. Two particles A and B of mass 10 g and 20 g
respectively fall vertically. At a given time, the speed
of particle A is 12 m/s and that of B is 15 m/s. Find
the total linear momentum of the system of the two
particles.​

Answer 1

Answer:

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subhampradhan592

Secondary School Physics 5+3 pts

Two particles A and B of mass 10 g and 20 g respectively fall vertically. At a given time, the speed of particle A is 12m/s and that of B is 15m/s. find the total linear momentum of the system of the two particles?

Report by Aryanmonu 01.07.2018

Answers

subhampradhan592

Subhampradhan592Ambitious

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anakhamariamjames

AnakhamariamjamesHelping Hand

mass of particle A = 10 g= 0.010 kg

Velocity, v = 12 m/s

momentum = mv

= 0.010 kg X 12 m/s

= 0.12 kg m/s

mass of particle B = 20 g= 0.020 kg

Velocity, v = 15 m/s

momentum = mv

= 0.020 kg X 15 m/s

= 0.3 kg m/s

Total momentum = 0.12 kg m/s + 0.3 kg m/s

= 0.42 kg m/s downwards

Answer 2

Mass of A = 10 g =  = 0.01 kg

Velocity of A = 12 m/s

Mass of B = 20 g =  = 0.02 kg

Velocity of B = 15 m/s

We know that :

Momentum of A = 0.01 × 12 = 0.12 kgm/s

Momentum of B = 0.02 × 15 = 0.3 kgm/s

Total Momentum = 0.12 kgm/s + 0.3 kgm/s

=》 0.42 kgm/s