5 Steps to a 5 AP Physics 1 Algebra-based, 2015 Edition by Greg Jacobs

Author:Greg Jacobs
Language: eng
Format: epub
Publisher: McGraw-Hill Education
Published: 2014-01-15T00:00:00+00:00

Rapid Review

• In any system in which the only forces acting are between objects in that system, momentum is conserved. This effectively means that momentum is conserved in all collisions.

• The center of mass of a system of objects obeys Newton’s second law.

• The impulse-momentum theorem is ∆p = F · Δt.

• The impulse-momentum theorem is always valid, but it is most useful when objects collide.

• The only time when momentum of a system is not conserved is when a force is exerted by an object that’s not in the system.

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