A 5. 0 kg object undergoes a time-varying force as shown in the graph below. If the velocity at t = 0. 0 s is 1. 0 m/s, what is the velocity of the object at t = 7 s?.

A6,600 kg train car moving at +2.0 m/s bumps into and locks together with one of mass 5,400kg moving at -3.0m/s. what is their final velocity? +0.50 m/s -1.0 m/s +2.5 m/s -0.25 m/s

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?