Q-two toy cars A and B are moving towards each other on a horizontal surface The car A has mass - Science - Force and Laws of Motion

Question

Q-two toy cars A and B are moving towards each other on a
horizontal surface The car A has mass of 60g and moves towards the
right with a speed of 60cm/s the car B has a mass of 100g moves
toward the left with a speed of 20m/s the 2 cars collide and get
struck to each other with what velocity will they move after the
collision?

Komal Jain · Accepted Answer

The mass of car A, mA = 60 g = 0 06 kg
The speed of car A, vA = 60 cm/s = 0 6 m/s
The mass of car B, mB = 100 g = 0 1 kg
Speed of car B, vB = 20 m/s
Using law of conservation of momentum,
mAvA→+mBvB→=(mA+mB)v→⇒0 06×0 6-0
1×20=(0 06+0 1)v→⇒0 036-2=0
16v→⇒v→=-1 9640 16=-12
275 m/sThe negative sign shows that the motion of the both the car is along the direction of initial motion of car B
Therefore, both the cars move towards left