Coal as a fuel source led to the invention of
A. Paper
B. The Printing Press
C. Steel
D. Compass

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning

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

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s