A boulder rolls off a cliff with a speed of 15 m/s. If the boulder falls for 3.5 s and hits the ground. What is the boulder's final vertical velocity?
What is the height of the cliff it rolled off at?
m/s
m
How far away did the boulder travel horizontally during its flight?
m

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star