An object attached to a spring is pulled across a frictionless surface. if the spring constant is 45 n/m and the spring is stretched by 0.88 m when the object is accelerating at 1.5 m/s2, what is the mass of the object?

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

What properties of a moving object are used in determining the object's energy of motion