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  1. AP Physics 1
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What is the definition of momentum?

Momentum (p⃗\vec{p}p​) is a measure of how much 'oomph' an object has in its motion. It's the product of an object's mass (m) and its velocity (v⃗\vec{v}v): p⃗=mv⃗\vec{p} = m\vec{v}p​=mv

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What is the definition of momentum?

Momentum (p⃗\vec{p}p​) is a measure of how much 'oomph' an object has in its motion. It's the product of an object's mass (m) and its velocity (v⃗\vec{v}v): p⃗=mv⃗\vec{p} = m\vec{v}p​=mv

What is the definition of impulse?

Impulse (J⃗\vec{J}J) is the change in momentum of an object. It's also the product of the average force (F⃗avg\vec{F}_{avg}Favg​) acting on an object and the time interval (Δt\Delta tΔt) during which the force acts: J⃗=F⃗avgΔt=Δp⃗\vec{J} = \vec{F}_{avg} \Delta t = \Delta \vec{p}J=Favg​Δt=Δp​

What is linear momentum?

Linear momentum is the momentum of an object moving in a straight line.

What is angular momentum?

Angular momentum is the momentum of a rotating object.

What is the Impulse-Momentum Theorem?

The impulse acting on an object equals the change in momentum of the object: J⃗=Δp⃗\vec{J} = \Delta \vec{p}J=Δp​

What is the effect of a force acting on an object over a period of time?

It causes a change in the object's momentum (impulse).

What happens to the total momentum in a closed system?

The total momentum remains constant (conservation of momentum).

What is the effect of expelling fuel with speed vvv at rate ΔmΔt\frac{\Delta m}{\Delta t}ΔtΔm​ on a rocket?

The rocket experiences a thrust force.

Define momentum.

Momentum (p⃗\vec{p}p​) is a measure of how much 'oomph' an object has in its motion. It's the product of an object's mass (m) and its velocity (v⃗\vec{v}v): p⃗=mv⃗\vec{p} = m\vec{v}p​=mv

What is impulse?

Impulse (J⃗\vec{J}J) is the change in momentum of an object. It's also the product of the average force (F⃗avg\vec{F}_{avg}Favg​) acting on an object and the time interval (Δt\Delta tΔt) during which the force acts: J⃗=F⃗avgΔt=Δp⃗\vec{J} = \vec{F}_{avg} \Delta t = \Delta \vec{p}J=Favg​Δt=Δp​

What are the units for momentum?

kg⋅m/s

What are the units for impulse?

N⋅s (which is equivalent to kg⋅m/s)

What is linear momentum?

Momentum for objects moving in a straight line.

What is angular momentum?

Momentum for rotating objects.