In an x-ray tube, an electron with mass 9.1x10-31 kg moves with a velocity Of 9.8x106 ms-. It hits the metal target and rebound with a speed 7.5x104 ms 1 after 5.0x10-6 s. Determine
a) the initial and final momentum of the electron
b) the impulse
c) the average force, F

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Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

You throw a baseball directly upward at time =0 at an initial speed of 14.9 m/s. what is the maximum height the ball reaches above where it leaves your hand? ignore air resistance and take =9.80 m/s2.