2) An Atwood's machine is created by hanging a 55 kg mass by a rope that runs through a pulley and is connected to a 45 kg mass on the other side. If the masses are released, what
is the tension (in Newtons) in the rope?

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

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?

Abike rider starts from rest and accelerates 28.0 meters down a slope in 5.00 seconds. what is her acceleration? select one: a. 3.21 m/sec2 b. 1.75 m/sec2 c. 9.80 m/sec2 d. 2.24 m/sec2