Question

two esinal
masses travel toward
caen other with speed
with speed boom/ see
and 40cm/sec. They stick together
on impact. What is
The speed​

Answer 1

Answer:

This is very simple to do using the principle of conservation of momentum. Let each mass be m . Arbitrarily adopting the standard that the first mass is travelling with a positive velocity, and the combined masses will be travelling with velocity v we get :-

2mv=60m−40m=20m

dividing both sides by 2m we get

v=10 cm/s travelling in the same direction as the mass initially travelling at 60 cm/s