Question

Two objects each of mass 2kg are moving in the same straight line but in opposite directions.The velocity of each object is 4m/s before the collision during which they stick together. What will be the velocity of the combined object?

Answer 1

Answer:

0(zero)

Explanation:

Initial momentum of object 1 = mv

=2×2.5=5kgm/s

Initial momentum of object -2 = mx (-v)

=2×(−2.5)

=−5kgm/s

Momentum of the combination of two after collision =5+(−5)=0

So, velocity of combination =

Mass of combination

Momentum of combination

=

4

0

=0