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 (NEW)
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: Vertical Motion & Free Fall

Practice: An object is launched up and reaches its maximum height in 10 s. Find its launch speed.

Concept #2: Multiple Parts & Symmetry

Concept #3: Solving Multiple Parts in One Step

Additional Problems
A rock is dropped from a high cliff (with an initial velocity of zero). What is the velocity of the rock 1.8 seconds after its release? A) 9.8 m/s B) 17.6 m/s C) 8.8 m/s D) 35.3 m/s E) 15.9 m/s
A rock is dropped from a high cliff (with an initial velocity of zero). What is the velocity of the 3.6 seconds after its release? A) 9.8 m/s B) 17.6 m/s C) 63.5 m/s D) 35.3 m/s E) 127.0 m/s
A rock is dropped from a high cliff (with an initial velocity of zero). Through what distance does the rock fall in the first 1.8 seconds of its flight? A) 31.8 m B) 15.9 m C) 17.6 m D) 9.8 m E) 8.8 m
A rock is dropped from a high cliff (with an initial velocity of zero). Through what distance does the rock fall in the first 3.6 seconds of its flight? A) 17.6 m B) 127.0 m C) 31.8 m D) 63.5 m E) 9.8 m
A ball is thrown into the air, directly upward. If it feels no air resistance, which of the following statements is true: a) The acceleration of the ball points downward while the ball travels upwards, and upward while the ball falls. b) The acceleration of the ball points upward while the ball travels upwards, and upward while the ball balls. c) The acceleration of the ball points downward while the ball travels upwards, and downward while the ball falls. d) The acceleration of the ball points downward while the ball travels upwards, and upward while the ball falls.
An object is thrown vertically into the air at 5 m/s. What is the maximum height the object will reach?
An object is thrown vertically into the air at 20 m/s. What will the object’s speed be after 0.5 s?
An object is thrown vertically into the air at 15 m/s. How long will it take the object to be moving downwards with a speed of 8 m/s?
While visiting New York City, you want to see how long it would take a penny to fall from the top of the Empire State Building. If the observation deck of the building (on the 82nd floor) is 320 m high, how long would it take the penny to hit the ground? 
An object is dropped from an arbitrary height. How much further does the object fall in the 2nd second than it does in its 1st second of free fall?
A ball is thrown downward with a large starting velocity. Will this accelerate more rapidly than one that is just dropped at the same time from the same height? A) No, because it starts faster it will later accelerate less rapidly. B) No, freefall acceleration is always the same, no matter what the initial velocity. C) Yes, a ball that already has a higher velocity will also accelerate at a higher rate. D) Yes, but only of the thrown ball is also heave than the dropped ball.
A ball is thrown straight upward and then returns to the earth. Does the acceleration change during this motion? A) The acceleration first decreases and then increases. B) During the motion the acceleration never changes. C) The acceleration is larger going down than up. D) The acceleration first increases and then decreases.
A ball is thrown upward from the ground with and initial speed of 41 m/s; at the same instant, a ball is dropped from a building 37 m high. The acceleration of gravity is 9.8 m/s2 . After how long will the balls be at the same height?
A ball is thrown downward with a large starting velocity. Will this ball reach the ground sooner than one that is just dropped at the same time from the same height?A) Yes, because the average speed of the thrown ball is larger it will hit the ground first.B) No, because the acceleration is the same for both balls they will reach the ground at the same time.C) No, the maximum speed for falling balls is 9.6 m/s and both will hit the ground at the same time.D) Yes, but only if the thrown ball is also heavier than the dropped ball.