A rock is thrown horizontally from a bridge with a velocity of 5 m/s at an angle of 0 degrees. It hits the water below in 2.2 seconds. The range (horizontal displacement) of this rock is:
meters

The height (vertical displacement) of the bridge is:
meters

The vertical velocity of the rock just before hitting the water is:
meters/second

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?