Froggy Jumps Conservation of MomentumOnline version Answer the questions correctly to get the frog across the water. by Jessica Fritzges 1 What is momentum? a Momentum is a term used in classical mechanics. b Momentum is a measure of how heavy an object is. c Momentum is a measure of how hard it is to stop an object. 2 When is the total momentum of a system of objects conserved? a The total momentum is conserved when there is no net force on the system. b The total momentum is conserved when the objects change direction or speed. c The total momentum is conserved when something acts on the system. 3 Why is the total momentum of a system conserved when there is no net force on the system? a Because something acts on the system b Because nothing acts on the system c Because the objects change direction or speed 4 What happens to the total momentum of a system if there is no net force acting on it? a The total momentum of the system increases. b The total momentum of the system remains constant. c The total momentum of the system decreases. 5 A 3 kg object moves at 4 m/s. What is its momentum? a 12 kg·m/s b 7 kg·m/s c 1.5 kg·m/s 6 What is required for momentum to be conserved in a system? a The system must be isolated with no net external forces acting on it b The system must be moving at a constant speed c The system must have equal mass on both sides 7 A 0.5 kg toy car is moving at a velocity of 10 m/s. What is its momentum? a 0.5 kg·m/s b 10 kg·m/s c 5 kg·m/s 8 A 2 kg ball is rolling at a velocity of 3 m/s. What is its momentum? a 12 kg·m/s b 6 kg·m/s c 5 kg·m/s 9 If two ice skaters push off from each other, what happens to their total momentum? a It becomes zero b It increases c It remains the same 10 What happens to the momentum of an object if its mass doubles? a The momentum becomes zero. b The momentum doubles. c The momentum remains the same. 11 How does velocity affect the momentum of an object? a The faster the object is moving, the greater its momentum. b Velocity does not impact the momentum of an object. c The slower the object is moving, the greater its momentum. 12 What is the relationship between mass and momentum? a Momentum is not related to mass. b Mass does not affect momentum. c The greater the mass, the greater the momentum.
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