A 100 kg rollercoaster car is moving with a speed of 10m/s at position A which is 20m above the ground. Assuming there is no friction or air
resistance on the track, how much total energy should the car have when
it reaches position B, a hill of 10m?

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

Which sound characteristic is not affected by the relative motion of an object

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?