1. The 125 kg cart starts from rest and rolls with negligible friction. It is pulled by two ropes as shown below to move it 100 m horizontally to the right.
F2
200 N
30.07
300 N
F:
a
Calculate the net work done on the cart.
b. Find the final velocity of the cart.
c.
What is the average power used by the cart if it takes 70 s to move through the 100 m?

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”