A ball is dropped from height of 20m at the same instant and the ball is thrown up from the ground with speed 20m/s when and where will ball meet

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

The slope of a velocity time graph over any interval of time gives the during that interval

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?