If two balls have the same amount of mass and the red ball is resting at a height of 2m and the blue ball is resting at a height of 4m, which has more potential energy? A) red ball
B) blue ball

An object has a weight of 500 on earth what is the mass of this object

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?