Answer :
The momentum at the end of the 1.5s in component form a speed of 1.23 m/sec.
mgh=1/2mv²
v=√2gh
v=3.7 m/s
elastic collision
V=(m₁-m₂/m₁+m₂)v
=0.5-2.5/.5+2.5(3.7)
V₁=-2.47 m/sec
V₂=(2m₁/m₁+m₂)V
=2(0.5)/0.5+2.5
V₂=1.23 m/sec
In Newtonian mechanics, momentum is calculated as the sum of an object's mass and velocity. It has both a magnitude and a direction, making it a vector quantity. The momentum of an object is determined by its mass (m) and its velocity (v). Since velocity is a vector and mass is a scalar, momentum is a vector quantity. Momentum can be viewed as a body's "power" while it is moving, or the amount of force it can exert on another body. For instance, a baseball (small mass) thrown quickly can have the same momentum as a bowling ball (big mass) going extremely slowly (low velocity) (high velocity).
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