AP Physics 2 Question Quiz

How you calculate Average Velocity and Speed

V = displacement/time
S = distance/time

What is the difference between instantaneous velocity and instantaneous speed?

Instantaneous velocity is a vector (had direction), instantaneous speed is the absolute value of velocity and is a scalar

Given a position vs. time graph, how do you find velocity?

Find slope

What can you get from the slope of the position vs. time-squared graph when the
initial velocity is zero?

You can get acceleration

Given a velocity vs. time graph, how do you find acceleration?

Find slope 1

Given a velocity vs. time graph, how do you find displacement?

Add all the areas, the answer should have the direction in it.

Given a velocity vs. time graph, how do you find total distance traveled?

Sum of the absolute values of the area.

Given acceleration vs. time graph, how do you find change in velocity?

Add all the areas and include the sign (direction)

Given a velocity vs. time graph, how do you find the time when the object passes
through the initial position after t=0?

Sum of areas have to be = 0

How do you draw a line of best fit? You may draw an example

straight line (draw through the middle)

Describe the vertical velocity and acceleration in projectile motion as the object goes
up and down

going up | Vy | decrease (slows down), going down | Vy | increases (speeds up) ay = g ⬇

Describe the horizontal velocity and acceleration in projectile motion.

Velocity = constant ax = 0

What is the difference between static friction and kinetic friction? Which coefficient is
greater?

Static friction: object not moving, greater than kinetic
Kinetic friction: object is moving

What quantity gives you the measure of the translational (linear) inertia of an object?

mass

An object acted upon by a net force will always experience an ___________, which
means it will either ___, ____, and/or ______.

acceleration, speed up, slow down, turn

A force parallel to the velocity of an object makes it ________. A force perpendicular
to the velocity of an object, makes it ________

speed up, slow down

Describe velocity, acceleration, and net force, when an object is in translational
(linear) equilibrium

V : constant, a = 0, net force: 0

List the three fundamental forces in nature in terms of their magnitude from the weak
to strong

gravitational, electromagnetic, nuclear

List the three fundamental forces in nature in terms of their range from short to long

nuclear, electromagnetic, gravitational

Two or more objects moving together (pulled by a rope of pushing each other) share
the same ___

magnitude or absolute value of acceleration

The normal force is always _______ to the surface.

perpendicular

The friction force always ____ the motion (or the intent of motion).and is proportional
to the ___ force

oposses, normal force

When the force applied is less than the maximum static force of friction, the
magnitude of the force of friction equals _______ and the acceleration equals ______

Fapplied, 0

Given an object on an incline, list the components of its weight parallel and
perpendicular to the plane.

parallel - Fgsintheta, perpendicular - Fgcostheta

According to Hooke’s Law, the force needed to stretch (or compress) a spring depends
on_______

spring constant and the distance

What does the word centripetal mean? What quantities are centripetal in circular
motion?

towards the centre

In UCM are centripetal acceleration, centripetal force, and tangential velocity
constant? Justify your answer.

no because they change direction

In UCM, the centripetal force is proportional to______ and inversely proportional to
______.

mass and speed²

The gravitational force between two objects is proportional to_____ and inversely
proportional to _____.

mass and mass², r²