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Transcript

1. At any given time, the momentum of an object depends on _______________. List all that apply. a. How much mass the object has b. The net force being applied to the object c. How rapidly the object is accelerating d. The rate at which the object is changing its velocity e. How fast (or slow) the object is moving f. The time over which the object has been moving 2. An object which has a lot of momentum can be sure to _________________________. a. Be moving very fast b. Have a lot of mass c. Be encountering a large net force d. Be changing its velocity very rapidly e. Be exceeding the speed limit f. Nonsense-none of these are necessarily true 3. A leftward moving object is slowing down. The direction of its momentum is… a. Leftward b. Rightward c. Impossible to tell with this information d. Nonsense-momentum has no direction 4. Consider the mass and velocity values of objects a and b below. Compared to object B, object A has ______ momentum. Object A Object B 4kg 2 kg a. b. c. d. e. f. g. h. i. j. v=4m/s Two times the Four times the Six times the Eight times the The same One half the One fourth the One sixth the One eighth the Impossible to tell v=4m/s