3 C5 TEST CHP. 9 NAME nince MULTIPLE CHOICE The amount of time or the force need

Question

3 C5 TEST CHP. 9 NAME nince MULTIPLE CHOICE The amount of time or the force needed to bring a moving object to rest is a measure of an object's: 1. c. momentum a. Velocity b. Impulse d. Torque 2. The product of the average force and the time interval over which the force is exerted is c. angular acceleration d. Moment of inertia a. Impulse b. Momentum The correct formula for the momentum (p) of an object is: a ma 3. c. mg d. Mv b. 1/2mv2 4. The impulse exerted on an object is equal to: c. moment of inertia d. Both a & b a. The object's change in momentum 5. Which conditions would result in the largest change in momentum? A large force exerted over a long time interval a. b. c. d. A large force exerted over a short time interval A small force exerted over a long time interval A small force exerted over a short time interval 6. In a closed, isolated system, when two objects collide: a. Momentum decreases b. Momentum increases c. momentum stays constant d. It depends on the objects 7. If two objects are initially at rest, and after an event move off in opposite directions, the sum of the final momenta of the objects must be: a. Zero b. Positive c. Negative d. Greater than before the event

Explanation / Answer

1. Momentum , it is the measure of quantity of moving object.

2. impulse - it is the product of force and time

3. m.v = mass* velocity

4.F * change in time

5.b. large force exerted over a short time period

6. c. momentum is constant.

7. a. zero

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