Kinematics
An object's change in position divided by the time taken.
What is average velocity?
In projectile motion, this component of velocity remains constant throughout the flight.
What is the horizontal component?
Newton's first law is also known by this name.
What is the law of inertia?
The direction of centripetal acceleration in uniform circular motion.
What is toward the center (inward)?
Work is calculated as force times this quantity (when force and displacement are parallel).
What is displacement?
The equation that relates displacement, initial velocity, acceleration, and time.
d = v₀t + ½at².
A ball is launched horizontally off a cliff. The time it takes to hit the ground depends only on this.
What is the height of the cliff (or vertical free-fall)?
The net force required to accelerate a 10 kg object at 4 m/s².
What is 40 N?
The formula for centripetal acceleration in terms of speed v and radius r.
What is a = v²/r?
The work-energy theorem states that net work equals the change in this.
What is kinetic energy?
A car accelerates from rest at 3 m/s². Its speed after 5 seconds.
What is 15 m/s?
The shape of the path traced by a projectile launched at an angle.
What is a parabola?
When you push against a wall, the wall pushes back with an equal and opposite force. This is Newton's [BLANK] law.
What is the third law?
A car rounds a curve of radius 50 m at 10 m/s. Its centripetal acceleration.
What is 2 m/s²?
A 3 kg ball is dropped from 5 m. Its kinetic energy just before hitting the ground (g = 10 m/s²).
What is 150 J?
An object thrown straight up reaches its peak. Its acceleration at that instant.
What is −9.8 m/s² (or 9.8 m/s² downward)?
A vector quantity that combines both horizontal and vertical components to give the object's speed and direction.
What is the resultant (or net) velocity?
On a frictionless surface, a 5 kg block is pulled by a 20 N force. Its acceleration.
What is 4 m/s²?
The force that keeps a satellite in circular orbit around Earth.
What is gravity (gravitational force)?
A spring with constant k = 200 N/m is compressed 0.1 m. Its stored potential energy.
What is 1 J?
A bullet is moving at a speed of 367 m/s when it embeds into a lump of moist clay. The bullet penetrates for a distance of 0.0621 m. Determine the acceleration of the bullet while moving into the clay. (Assume a uniform acceleration.)
What is -1.08*10^6 m/s/s?
A swimmer heads directly across a river swimming at 1.6 m/s relative to still water. She arrives at a point 40 m downstream from the point directly across the river, which is 80 m wide. Determine the magnitude and direction of the swimmer's resultant velocity.
What is 1.8m/s and 27o downstream?
A 2 kg block sits on a 5 kg block on a frictionless table. A 21 N force is applied to the 5 kg block. The acceleration of the system.
What is 3 m/s²?
A fly of mass 2.00 g is sunning itself on a phonograph turntable at a location that is 4.00 cm from
the center. When the turntable is turned on and rotates at 45.0 rev/min, calculate the centripetal
force needed to keep the fly from slipping?
What is F = 0.002N?
In a system with only conservative forces, this quantity remains constant throughout the motion.
What is total mechanical energy?