How many miles is it from here to the moon?

Which of the following is an example of motion in two dimensions?

What object a collides with object b and bounces back its final momentum is?

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