An object of mass 100g projected vertically upwards from the ground level has a velocity of 20m/s at a height of 10m. Calculate the initial kinetic energy at the ground level.​

Gam radio signals can usually be heard behind a hill, but fm often cannot. that is, am signals bend more than fm. explain. (radio signals, as we shall see, are carried by electromagnetic waves whose wavelength for am is typically 200 to 600 m and for fm about 3 m.)

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.