Ch 02: 1D Motion (Kinematics)See all chapters
All Chapters
Ch 01: Units & Vectors
Ch 02: 1D Motion (Kinematics)
Ch 03: 2D Motion (Projectile Motion)
Ch 04: Intro to Forces (Dynamics)
Ch 05: Friction, Inclines, Systems
Ch 06: Centripetal Forces & Gravitation
Ch 07: Work & Energy
Ch 08: Conservation of Energy
Ch 09: Momentum & Impulse
Ch 10: Rotational Kinematics
Ch 11: Rotational Inertia & Energy
Ch 12: Torque & Rotational Dynamics
Ch 13: Rotational Equilibrium
Ch 14: Angular Momentum
Ch 15: Periodic Motion (Oscillations)
Ch 16: Waves & Sound
Ch 17: Fluid Mechanics
Ch 18: Heat and Temperature
Ch 19: Kinetic Theory of Ideal Gasses
Ch 20: The First Law of Thermodynamics
Ch 21: The Second Law of Thermodynamics
Ch 22: Electric Force & Field; Gauss' Law
Ch 23: Electric Potential
Ch 24: Capacitors & Dielectrics
Ch 25: Resistors & DC Circuits
Ch 26: Magnetic Fields and Forces
Ch 27: Sources of Magnetic Field
Ch 28: Induction and Inductance
Ch 29: Alternating Current
Ch 30: Electromagnetic Waves
Ch 31: Geometric Optics
Ch 32: Wave Optics
Ch 34: Special Relativity
Ch 35: Particle-Wave Duality
Ch 36: Atomic Structure
Ch 37: Nuclear Physics
Ch 38: Quantum Mechanics

Concept #1: Velocity vs. Speed

Concept #2: Average Velocity Problems

Concept #3: Acceleration & Motion Equations

Concept #4: Motion with Acceleration (Practice Intro)

Practice: The M40, the U.S. Marine Corps standard-issue sniper rifle, has a barrel length of 61 cm and bullet muzzle speed of 777 m/s. Find the acceleration experienced by the bullet.

Practice: A car leaves a skid mark of 70 m while coming to a full stop. Assuming a constant deceleration of 8 m/s^2. What was the car?s initial speed?

Practice: A car accelerates from 30 m/s to 60 m/s in 5 seconds. What distance does it cover in that time?

Practice: The 2013 Ferrari California?s quarter mile time (time to travel one quarter mile, or 402 m, starting from rest) is just 12.0 seconds! Assuming constant acceleration, how fast will it be moving once it reaches the quarter mile point?

Additional Problems
During takeoff, an airplane has an acceleration of 7.75 m/s2. What is its speed after 9 s? A) 8 m/s B) 0.9 m/s C) 628 m/s D) 314 m/s E) 70 m/s
During takeoff, an airplane has an acceleration of 7.75 m/s2. How far has it traveled after 9 s? A) 3.9 m B) 35 m C) 628 m D) 314 m E) 70 m
During some motion, an object moves in the 10 m in the +y direction in 2 s, pauses for 3 s, and then moves 5 m in the +x direction in 0.5 s. What is the average velocity of the object during this motion?
During some motion, an object moves in the 7 m in the +y direction in 1.5 s, pauses for 1 s, and then moves 6 m in the +x direction in 1 s. What is the average speed of the object during this motion?
Usain Bolt can run the 100 m dash in 9.58 s. What is Usain’s average acceleration during this sprint?
Usain Bolt can run the 100 m dash in 9.58s. Assuming his acceleration is constant during the sprint, what speed would Usain cross the finish line at?
A jogger is running around a circular track. If the jogger is averaging a mile every 10 minutes, and a single lap of the track is a quarter mile, what is the jogger’s average velocity, in m/s, during a lap? Use 1 mile = 1600 m.
A car driving at a speed of 20 m/s sees a dog in the road. If the dog is 100 m in front of the car, what is the minimum deceleration of the car so the driver doesn’t hit the dog?
A ball is thrown against a wall and bounces back toward the thrower with the same speed as it had before hitting the wall. Does the velocity of the ball change in this process? A) Although the speed is the same, the direction has changed. Therefore, the velocity has changed. B) The velocity is the same because the speed is the same. C) Without knowing the mass of the ball, the velocity is not determined. D) The velocity is now twice as large because the ball is going into the opposite direction.
A runner moving with an initial velocity of 9.0 m/s slows down at a constant rate of -1.3 m/s2 over a period of 2.4 seconds. What is her velocity at the end of this time? A) 5.88 m/s B) 3.12 m/s C) 12.12 m/s D) -3.12 m/s E) 0.54 m/s
A runner moving with an initial velocity of 9.0 m/s slows down at a constant rate of -1.3 m/s2 over a period of 2.4 seconds. What distance does she travel during this process? A) 21.60 m B) 25.34 m C) 3.74 m D) 17.86 m E) 14.11 m
A car accelerates from 5.0 m/s to 21 m/s at a rate of 3.0 m/s  2. How far does it travel while accelerating? A) 117 m B) 207 m  C) 69 m D) 41 m
A bullet traveling along the x axis at a velocity v x = vb strikes a telephone pole and penetrates a distance d before stopping. Assuming that the acceleration was constant, the time required to stop the bullet is. A. d / vb B. 2d / vb C. d / 2vb D. √2d / g E. vb / d
If an object moves in a straight line in the negative direction with decreasing speed, its acceleration will beA) zeroB) constantC) negativeD) positive
A car moving at 50 km/hr skids 202 m with locked brakes. How far will the car skid with locked brakes if it were travelling at 150km/hr? A) 20 m B) 180 m C) 60 m D) 90 m E) 120 m
Consider a car which is traveling along a straight road with constant acceleration a. There are two checkpoints A and B which are a distance 108 m apart. The time it takes for the car to travel from A to B is 4.43 s. Find the velocity vB for the case where the acceleration is 7.95 m/s2.
A tennis ball with a speed of 10 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 7.69 m/s. If the ball is in contact with the wall for 0.0122 s, what is the average acceleration of the ball while it is in contact with the wall? Take “toward the wall” to be the positive direction.
An object's position as a function of time is given by the equation y(t) = 5 - 7t  2 + 2t3. Its acceleration is A. constant with an undetermined value. B. varies with time, with a value of -14 m/s 2 at t = 0. C. varies with time, with a value of 0 at t = 0.  D. constant with a value of -9.8 m/s 2.