Department

PhysicsCourse Code

PHYSICS 5AProfessor

Josh SamaniStudy Guide

MidtermThis

**preview**shows pages 1-2. to view the full**6 pages of the document.**Physics 5a_ Study Guide_ Midterm 1

Formulas that professor provided ( images are from CCLE, professor recommends studying

the formula sheet and familiarize yourself with the syntax and equations.

KNOW what each constant represents. When working out problem, see with variables you

have and then find the equations that allow you to plug in the most number while also

allowing you to find what you’re looking for. Note that sometimes you have to use more than

one formulas to get to your answer

Only pages 1-2 are available for preview. Some parts have been intentionally blurred.

Concepts for Motion

●Action that is happen in the x direction has no effect of the y direction

○Object moving to the right has no effect on the object being thrown upward

●Remember to use signs (+) and (-) to indicate the direction that the object is going in.

○For gravity, object falling down is (-g), object being thrown up is (+g)

●Difference between position and displacement

○Position = total distance traveled

○Displacement= final position - initial position

■Ex: From point A to point B is 50 m. If Ned walked from point A to B and

then B to A, his total position is 100 m. His displacement is 0 because

50-50 =0

●Difference between speed and velocity

○Speed = describe how fast an object is moving

○Velocity = describe how fast an object is going and the direction it is going in

○When an object is being thrown up into the air, it’s velocity will always be

decreasing

●Vectors: has magnitude and direction and is represented by an arrow.

●In circular motion, direction can change, but velocity stays the same (constant).

Meaning speed can change, when velocity is constant.

●Acceleration: the rate of change in velocity over the change in time.

Motion in 2D

●Velocity vs. Time graph and Position vs. Time Graph

○Velocity vs. Time graph shows you the slope of the graph while Position vs. Time

graph shows you the displacement of the object (area under the curve)

●Difference between velocity and instantaneous velocity : the instantaneous speed is

actually the real definition of velocity. The difference is that normal velocity is assumed

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