A 15 kg block rests on a frictionless table and is connected by a light string to another block of mass 5 kg. The string is passed over a pulley of negligible mass and friction. What is the tension in the string?

Is it possible to use the energy from two atoms colliding to create a clean burning lasting fuel source with a large amount of force? is it also possible to harness that energy from the two atoms colliding to create a clean energy source that will last for years from just two atoms colliding. is there a possibility to control and store that energy for years but slowly let the energy out enough to power cities cheaper and faster.

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen