A projectile is fired from flat, level ground at a speed of 200 m/s at an angle of 60 degrees above the horizontal. -What are the x and y components of the initial velocity?
-What are the x and y components of the velocity 3 seconds after the projectile is launched?
-What is the speed of the projectile 3 seconds after it is launched?
-What are the x and y components of the velocity 3 seconds after the projectile lands?

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.

You win the lottery and decide to impress your friends by exhibiting a million-dollar cube of gold. at the time, gold is selling for $ 426.60 per troy ounce, and 1.0000 troy ounce equals 31.1035 g. -how tall would your million-dollar cube be? en cm

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field