Two objects are moving downward at a speed of 3 cm/s. Object A has a mass of 2kg and object B has a mass of 1kg. You want both objects to move to the left at a speed of 3 cm/s 1. In what direction should you exert the forces that will make the desired change?

2. Describe what strength force or forces would be needed to cause the desired velocity change.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?