A 4 kg object moves at a constant velocity 3 m/s to the right and collides with a 2 kg object moving at a velocity 6 m/s to the left. Which of the following statements is
correct?

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

J. j. thomson’s experiment disproved the theory that an atom

An alien spaceship is 500 m above the ground and moving at a constant velocity of 150 m/s upwards. how high above the ground is the ship after 5 seconds?