Kinematics & Projectiles
This quantity is the same for both objects if a ball is dropped and another is thrown horizontally from the same height at the same time (neglect air resistance).
What is the time to hit the ground?
This quantity is conserved in all collisions when no external forces act on a system.
What is momentum?
This form of energy depends only on an object’s height above a reference level.
What is gravitational potential energy?
This quantity is the rotational analog of linear mass, and depends on the mass distrobution of the object.
What is rotational inertia/moment of inertia?
This planet served as the capital of both the Galactic Republic and the Empire, and was also the site of the Jedi's largest temple.
What is Coruscant?
An object moves with constant acceleration. This aspect of its position vs. time graph gives the object’s velocity at any given point.
What is the slope?
Two carts stick together after colliding on a frictionless track.
This type of collision is described here.
What is perfectly inelastic?
A roller coaster car speeds up as it goes downhill. This is the best explanation for why it speeds up (ignore friction).
What is the law of conservation of energy?
A force applied perpendicular to a wrench produces more rotation than the same force applied at an angle because this quantity is larger.
What is torque?
Although she was not born there, Princess Leia's adoptive parents raised her on this planet. Unfortunately, it was destroyed by the first Death Star on the orders of Grand Moff Tarkin.
What is Alderaan?
A car slows uniformly from 30 m/s to rest in 6.0 s. This is the distance it travels while stopping.
What is 90 m?
A 2.0 kg cart moving at 4.0 m/s collides and sticks to a 1.0 kg cart at rest.
This is their final speed.
What is 2.7 m/s?
A ball is dropped from a height of 20 m.
Ignoring air resistance, this is its speed just before hitting the ground.
What is 19.8 m/s?
A rigid object has a net torque of 12 N·m and a moment of inertia of 3.0 kg·m².
This is its angular acceleration.
What is 4.0 rad/s2?
This was the Imperial officer that was choked to death by Darth Vader via the Force for alerting the Rebels to their impending attack when he "dropped out of hyperspace too close to the Hoth system."
Who is Admiral Ozzel?
A projectile is launched at 20 m/s at 30 degrees above the horizontal. Ignore air resistance. This is the magnitude of its velocity at the top of its trajectory.
What is 17.3 m/s?
During an inelastic collision, this quantity changes even if momentum is conserved.
What is kinetic energy?
A block slides down a rough incline and reaches the bottom with less speed than expected. This energy principle explains the missing mechanical energy.
What is work done by friction?
A solid disk and a hoop roll without slipping down the same incline. This object reaches the bottom first.
What is the solid disk?
Despite most Imperial officers being human, Grand Admiral Thrawn belongs to this blue-skinned species, hailing from the Unknown Regions.
What is the Chiss?
Two projectiles are launched from the same height with the same speed but at complementary angles. This quantity is the same for both projectiles.
What is the horizontal range?
A ball hits a wall and bounces straight back with the same speed. Compared to simply stopping, this interaction has a greater magnitude of this quantity.
What is impulse?
Two objects slide down different frictionless ramps from the same height, but different angles (one is steeper than the other). This quantity is the same for both objects at the bottom.
What is speed/velocity?
A figure skater pulls in her arms while spinning. This law explains why her angular speed increases.
What is the law of conservation of angular momentum?
This High-Elf of the Noldor was the Son of Finarfin, and sister to Galadriel. Before the War of Wrath and the Ruin of Beleriand, he served as the Lord of the subterranean realm of Nargothrond. His people called him "Felagund," meaning "Lord of Caves," and he became a great friend of the Dwarves. He was slain by Sauron's wolves in the dark dungeons of Tol-in-Gaurhoth.
Who is Finrod?