Which graphs show the correct relationship between kinetic energy and mass? ОА.
y
+ kinetic energy
mass
OB.
+ kinetic energy
X
mass
V +

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.