GUYS PLEASE HELP ME ANSWER THIS ONE QUESTION Two piano movers are bringing a piano into a home. One mover pushes to the right with
a force of 310 N, while the other pulls to the right as well, but with a force of 270 N. The
force of friction acts to the left, with a magnitude of 190 N. The piano weighs 2500 N.
What is the net force on the piano?

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm