Impulse vs Work
On this worksheet you will examine the properties of force vs time (impulse) and force vs distance (work) as they apply to two objects of different masses.
Two masses, 4 kg and 8 kg, initially at rest, are both pushed by equal forces through the same distance across identical frictionless surfaces. Which mass would experience the greater acceleration?
both masses experience the same acceleration
Which mass has the greater final velocity?
both masses experience the same increase in velocity
Which mass gained the greater amount of kinetic energy?
both masses gain the same amount of kinetic energy
Which mass received the greater impulse?
both masses require the same amount of time to reach the end
If each mass was pushed by a 41-N force through a distance of 57 meters, what is the ratio of the change in momentum of the 4-kg mass to that of the 8-kg mass?
What is the final velocity of the 4-kg mass?
How much time was required for the 8-kg mass to travel the entire 57 meters?
Which formula correctly relates an object's kinetic energy and its momentum?
KE = 2m/p
KE = 2v/p
KE = ½(p
KE = ½(p
Regardless of which mass is being examined, which graph will always has the greater area?
Force vs Time
both are always equal
Force vs Distance
neither is always larger
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Catharine H. Colwell
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