Tuesday, April 5, 2016

4.3.1

Define the terms force, speed, velocity, displacement, acceleration, momentum, and impulse.

Force: (vector) the mechanical interactions between two objects or bodies. Measured in Newtons (N).     F=ma  
Speed: (scalar) the distance an object travels per unit of time.  speed=distance/t
Velocity: (vector) the speed of an object in a certain direction. The displacement per unit time.                 V=d/t
Displacement: (vector) how far and in what direction is the end position from the starting position.
Acceleration: (vector) the change in an objects velocity over a certain amount of time.       a=Δv/Δt
Momentum: (vector) the property an object has due to its movement. Momentum is the mass of an object times its velocity.      p=mv

Impulse: (vector) force multiplies by the time it acts.     J=Ft=mΔv

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