F a roller coaster at six flags had a car with a mass of 400 kg and a velocity of 50m/s, calculate the kinetic energy of the roller coaster

Julia throws a ball vertically upward from the ground with a speed of 5.89 m/s. Andrew catches it when it is on it's way down at a height of 1.27 m from the ground. After how much time does andrew catch the ball?

An object travels 15 m in 3 s what is its speed?

What is the threshold frequency ν0 of cesium?

What are the three types of friction and when does each apply?

What are some examples of mechanical waves?

In the diagrams, the solid green line represents Earth's rotational axis and the dashed red line represents the magnetic field axis. Which diagram accurately shows Earth's magnetic field?

What has been gravity's apparent role in our solar system so far? Focus on the formation of planets, individual orbits, alignment of planets in orbital plane, and any other phenomena you find relevant to the question

A 19 cm long, 10 mm diameter string was found to stretch 3.5 mm under a force of 16 N. The string breaks at a force of 42 N.

How might a nitrogen-oxygen atmosphere on the moon affect the range of temperatures on the moon? A) An atmosphere might hold in heat, making the moon very hot B) An atmosphere might block heat radiating from the sun, making the moon very cold C) An

Two students stand poised to leap off a high dive structure into the swimming pool below. Student B is twice as massive as student A. Which of the following is true? A. Student B will reach the ground sooner than student A. B.