AP PHYSICS Warm-Up Exercises 1D KINEMATICS 1D KINEMATICS

1-D KINEMATICS 1-D KINEMATICS 1-D KINEMATICS

1-D KINEMATICS 1-D KINEMATICS C

A D B

E 1-D KINEMATICS 3

5 1 2 4 6

E B F A C D

FREE FALL FREE FALL Draw three graphs (position versus time, velocity versus

time and acceleration versus time) depicting the motion of the rocket from lab. GRAPHS OF MOTION Complete the chart below.

FORCES FORCES FORCES

TENSION 1 kg = 2.2 lb

TA = 1163 N TB = 1212 N

FORCES FORCES 2m

2m can FORCES FORCES

An object is moving east at a constant speed. Three forces act on the object. One force is 3 N directed east and 4 N is directed north. What is the magnitude and direction of the third force if the object continues moving at a constant speed?

5 N, southwest FORCES You are standing on a spring scale in an elevator that is moving upward with a constant speed. The reading of this scale

(A) cannot be determined without knowing the speed of the elevator (B) is the same when the elevator was at rest (C) is less than when the elevator was at rest (D) is greater than when the elevator was at rest

FRICTION k = 0.32

FRICTION a = 2 m/ s2 FRICTION

a = 1.04 m/s2 T = 8.96 N Determine the acceleration of the blocks

and the tension T assuming the following values: m1 = 4 kg; m2 = 1 kg; s = 0.15; and k = 0.12. FRICTION

If the man pushes the lawn mower at a constant speed with a force of 85 N at an angle of 35 degrees, what is the coefficient of kinetic friction between the 40 kg

mower and the grass? k = 0.16 INCLINED PLANES INCLINED PLANES

Calculate the acceleration of the block if m = 2 kg, = 300, T = 3O N, = 150, the coefficient of kinetic friction between m1 and the inclined plane is 0.12. a = 8.9 m/s2, up the incline

INCLINED PLANES Calculate the acceleration of the blocks if m1 = 3 kg and m2 = 2 kg and the coefficient of kinetic friction between m1 and the inclined plane is 0.12.

a = 1.82 m/ s2 CIRCULAR MOTION CIRCULAR MOTION

UNIVERSAL GRAVITATION WORK AND ENERGY F = 20 N

F = 35 N a = 1.5 m/s2 A roller coaster car of mass m = 200 kg is released from

rest at the top of a 60 m high hill (position A), and rolls with negligible friction down the hill, through a circular loop of radius 20 m (positions B, C, and D), and along a vB = 35 m/ horizontal track (to position E). vD =B?

20 m/ s A.What is the velocity of the car at position WORK AND ENERGY

WORK AND POWER ELASTICS ELASTICS

ELASTICS A block of mass 2.0 kg is hung from a spring, causing it to stretch 10 cm at equilibrium. The 2.0 kg block is then replaced by a 5.0 kg block, and the new block is released from the springs equilibrium, at which the spring is not

stretched. How far will the 5.0 kg block fall before its direction is reversed? 50 cm IMPULSE

A ball with a mass of 0.50 kg and a speed of 6 m/s collides perpendicularly with a wall and bounces off with a speed of 4 m/ s in the opposite direction. What is the magnitude of the impulse acting on the ball? (A) 1 Ns

(B) 5 Ns (C) 2 Ns (D) 10 Ns IMPULSE

IMPULSE EXPLOSIONS MOMENTUM

EXPLOSIONS SHM SHM

SHM SHM SHM

A block hanging vertically from a spring undergoes simple harmonic motion. Which of the graphs to the right could represent

the acceleration a as a function of position x for this block, where x = 0 is the midpoint of the TORQUE

200 N TORQUE A uniform beam (mass = 22 kg)

with a 25 kg sign attached to the end is supported by a cable that is attached to the center of the beam a shown in the diagram. Find the tension in the cable and the vertical and horizontal forces the

wall exerts on the hinge. 45o 25 kg T = 1018

N F = 720 N x Fy = 250 N

TORQUE Determine the reading on the spring scale and the tension in the string if the meter stick weighs 2 N. string

20 cm mark 5 kg

spring scale spring scale = 11 N

string = 41 N ROTATIONAL KINEMATICS A ferris wheel takes 3 minutes to make one revolution. What is the angular velocity of the

ferris wheel? A. 2.094 rad/s B. 0.035 rad/s C. 0.35 rad/s D.18.85 rad/s

MOMENT OF INERTIA ROTATIONAL DYNAMICS ANGULAR MOMENTUM

ROTATIONAL DYNAMICS A solid cylinder of mass m and radius R has a string wound around it. A person holding the string pulls it vertically upward causing the cylinder to rotate and accelerate upward. The tension in the

string is T and the moment of inertia of the cylinder is MR2. a = 2T/ m = what is A. In terms of the given quantities, the linear acceleration of the

cylinder? 2T/mR B. What is the angular acceleration? and I (area) C. What quantities would you graph to

ROLLING WAVES HARMONICS

RESONATORS RESONATORS Some police forces have used whistles that have two chambers of different lengths. A model of the whistle chamber is shown below. SHORTER CHAMBER

LONGER CHAMBER The fundamental frequencies for the two chambers are 2136 Hz and 1904 Hz. If the speed of sound in air is 343 m/s, what is the length of the longer chamber?

HARMONICS 1. What is the highest harmonic shown in the diagram? 7th 2. If the length of the string is 5 m, what is the wavelength of

the 5th harmonic? 2m 3. If the fundamental frequency is 15 Hz, what is the frequency of the 3rd harmonic?

45 Hz HARMONICS If the speed of the following wave is 8 m/s, what is the frequency of this wave?

10 A. 2 Hz m B. 4 Hz C. 5 Hz D. 10 Hz

CIRCUITS a.6 V b.3 c. 6