# 411 Study Momentum And Newtons Second

Study SheetStudy Sheet

Claire Hasenoehrl

Physical Science (S2541215)

Date: ____________

Use the spaces below to take notes on the key concepts presented in this study. Main idea #1: If something is moving, it has momentum. Impulse is change in momentum.

The product of mass and velocity

mass*velocity

vector because it has both magnitude and

direction

the product of the amount of force on an object and

the time during which the force is applied

F*∆t

An impulse causes change in momentum

∆p

(p=momentum)

∆p=m∆v

F∆t=m∆v

Main idea #2: In an isolated system, momentum before a collision is equal to momentum after the collision.

When one object exerts a force on a second

object, the second one exerts a force on the

first that’s equal in strength and opposite in

direction.

When you have an isolated system with no

external forces, the initial total momentum of

the objects before the collision equals the final

total momentum of the objects after the

collision.

Because the forces must be equal and the

time the objects are in contact is the same

for each object, we know that the impulse

each receives is also equal.

p (1b) + p (2b) = p (1a) + p (2a)

1/2 before/after

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