A mass is vibrating at the end of a spring of force constant 375 N/m. The figure below (Figure 1) shows a graph of its position x as a function of time t. .At what times is the mass not moving? Express your answers in seconds, separated by commas, to two significant figures. How much energy did this system originally contain? Express your answer in joules to two significant figures. How much energy did the system lose between t1 = 1.0 s and t2 = 2.0 s? Express your answer in joules to two significant figures.

Acar moves at 12m/s and coasts up a hill with a uniform acceleration of -1.6m/s2. how far has it traveled after 6.0s?

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

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?