411 Study Momentum And Newtons Second

Topics: Mass, Classical mechanics, Momentum Pages: 2 (226 words) Published: December 26, 2014
4.1.1 Study: Momentum and Newton's Second Law

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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