2. The product of an object's mass and velocity is its
centripetal force.
momentum.
net force.
weight.
3. What is conserved when two objects collide in a closed system?
acceleration
momentum
speed
velocity
4. What is the momentum of a 50-kilogram ice skater gliding across the ice at a speed of 5 m/s?
10 kg • m/s
500 kg • m/s
50 kg
250 kg • m/s
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