A car travels counterclockwise around a flat circle with a radius of 0. 25 km at a constant speed of 20 m/s. When the car is at point a as shown in the figure, what is the acceleration of the car?.

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.

Identify the type of synthetic material used in each object

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?