Exam Questions and CORRECT Answers
Momentum, as a physical value, is calculated using this equation. - CORRECT
ANSWER - mass x Velocity
What is the Impulse (Change in Momentum) of an object? - CORRECT ANSWER -
Calculated using the following equation: (mass)x(change in velocity)
The two units for an objects Change in Momentum (Impulse). - CORRECT ANSWER -
What are; (kg)x(m/s) and (N)x(s)
Since the overall Change in Momentum will remain constant during the crash, increasing _____
will result in a decrease in Force felt by the system. - CORRECT ANSWER - time of
collision
m1v1 + m2v2 = (m1+m2)vf
This is the law of conservation of momentum for a collision where the objects do what? -
CORRECT ANSWER - stick together
This law states that momentum is always conserved in either and elastic or inelastic collision -
CORRECT ANSWER - Law of Conservation of Momentum
What has more momentum; an idle semi-truck, or a bird in flight - CORRECT ANSWER -
Bird in flight
Block A and Block B move toward each other on a level, frictionless track. Block A has mass m
and velocity +v. Block B has mass 3m and velocity -2v. The blocks collide, and during the
collision the magnitude of the net force exerted on block A is F. What is the magnitude of the net
force exerted on Block B, and why does it have that value? - CORRECT ANSWER - The
magnitude of the net force exerted on Block B is F. This is due to Newton's 3rd Law of Motion.