Indicate whether the following statements are true or false. Assume that air resistance is negligible. The speed of the ball was greatest at point Y0 when it was still in contact with the spring. The speed of the ball was decreasing on its way from point Y0 to point Ytop. The speed of the ball was zero at point Ytop. The speed of the ball was the same for all points in its motion between points Y0 and Ytop.

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) sketch the trajectory using an appropriate coordination system. b) how long for the projectile to reach the ground. c) how far did projectile travel horizontally before striking the ground. d) determine the projectilex & y position at t-1.3s e) determine the magnitude and direction of projectile velocity at t= 1.3s f) determine the magnitude and direction of projectile acceleration at t-1.3s

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s. what is the wavelength?