A boulder with a mass of 25 kilograms slides 30 meters to the right while experiencing a rightward applied force of 150 newtons and a leftward force of friction that is two thirds the magnitude of the applied force.
1. Calculate the magnitude of work done by the force of friction.
A. O joules
B. 1500 joules
C. 3000 joules
D. 4500 joules

Which of the following quantities are units of momentum? (there could be more than one correct choice.) a)n m b) kg s/m c) kg m/'s d)n-s 12 points] e) kg m2/s2

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?