Aboy is pushing a chair by applying a force of 5 newtons. his mother him push it faster by applying an additional force of 7 newtons in the same direction. what is the net force acting on the chair?
a. 2 newtons
b. 5 newtons
c. 7 newtons
d. 12 newtons
e. 14 newtons

Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?

Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.