A roller coaster has a mass of 650 kg. It sits at the top of a hill with height 78 m. If it drops from this hill, how fast is it going when it reaches the bottom? (Assume there is no air resistance or friction.)

10 N 30 N 4 kg Net Force = a = F/m=

A 200 g oscillator in a vacuum chamber has a frequency of 2.0 hz. when air is admitted, the oscillation decreases to 60% of its initial amplitude in 50 s. how many oscillations will have been completed when the amplitude is 30% of its initial value?

Question 1 A boundary formed when two plates move past each other O A. Ocean A. Ocean basin B. Divergent boundary C. Transform boundary D. Convergent boundary

The Tapeats Sandstone is made of sand-sized rock pieces and contains fossils of trilobites. Trilobites were marine organisms similar to modern-day horseshoe crabs.

A bike (mass of bike + rider = 85 kg) is coasting on a flat road at 10 m/s. What is the kinetic energy of the bike and rider?

A rocket moves away from the surface of the earth. As the distance r from the center of the planet increases, what happens to the force of gravity on the rocket?

Why am i not floating?

A person holds onto an object for 2 minutes, but doesn't move the object. Is work done on the object?

Warming in front of a fire while camping is an example of? A. Conduction B. Convection C. Radiation

In which medium would light travel the fastest? Question 21 options: a. across a room b. in a swimming pool c. through outer space d. through a railroad track