A 355 kg coaster is moving 9.00 m/s when it is at the very top of a crest of a roller coaster track. The coaster plunges down and then rises to the next crest. The first crest is 95.0 m above the ground and the second crest is 75.0 m above the ground. Assuming a frictionless track, the speed of the coaster when it reaches the top of the second crest is most nearly

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

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?