What is the Kinetic Energy of a 120 kg object that is moving with a velocity of 15 m/s

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

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?