Two particles of masses m and 3m are moving toward each other along the x-axis with the same speed v. they undergo a head- on elastic collision and rebound along the x- axis. determine the final speed of the heavier object.

0

Explanation:

Given

two particles of mass m and 3m

They  move towards each other with velocity v

As the collision is Elastic therefore value of coefficient of restitution is 1

if and are velocity of approach of m and 3 m

and and are velocity after collision respectively

therefore

conserving momentum

Therefore velocity of heavier mass is zero

The answer is the Maunder Minimum, better known as the "prolonged sunspot minimum", is the title used for the era beginning in about 1645 and ongoing to around 1715 when sunspots turn out to be exceptionally rare, as distinguished by solar bystanders of the time.