Which of the following would have the most potential energy?

A.

a car moving along a flat road at 60 mph

В.

a rollercoaster that is at the bottom of a hill

C.

a ball rolling on a flat surface

D.

a rock sitting on the edge of a cliff

Isaac wants to make s'mores. He holds a marshmallow on a metal skewer over a fire. A few seconds later, the marshmallow is cooked and the skewer feels warm. What most likely happened? A.

What was Galileo's contribution to the study of motion?

Which situation is an example of transferring heat by means of convection? A) the sun warming the earth B) the weather patterns outside C) you toasty-warm in some footy pajamas D) you accidentally grabbing the hot pan from the oven

Analyze the formula W = mg to explain how an objects weight can change even when its mass remains constant.

The magnetic field is 0.0 2M from the wire is 0.1 T what is the magnitude of the magnetic field 0.0 1M from the same wire

A 5.00*105-kg subway train is brought to a stop from a speed of 0.500 m/s in 0.400 m by a large spring bumper at the end of its track. what is the force constant k of the spring

A moving object always has energy in its?

What is the volume of a box that is 12 cm long, 2 cm wide, and 3 cm high?

Suppose a child drives a bumper car head on into the side rail, which exerts a force of 4000 N on the car for 0.200 s. (a) What impulse is imparted by this force?

If a soundproof door is almost shut but still leaves a small opening, what wave phenomenon is responsible for someone being able to hear sound from the room while standing by the wall to the side of the opening?