Question

A body of mass 5kg moves along the x axis with a velocity of 2 m/s.A second body of mass 10kg moves along the y axis with a velocity of root 3 m/s.They collide at th origin and stick together.Calculate
1)The final vvelocity of the combined mass after the collison.

2)The amount of heat libeated in the collision

Answer 1

As momentum is conserved

V=m1v1+m2v2
=5*2+10*√3
=10+10√3
=27.1 m/s

Heat=1/2mv2
=1/2*(M1+M2)V2

= 1/2*15*27.1*27.1
=5508.05joule