A soccer player kicks the ball with all of his force. The mass of the ball is .25 kg. The ball accelerates at 200 m/s2. What is the force, to the nearest N, of the kick on the ball?

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass