A spring is compressed between two carts, one with a mass of 5kg and the other with a mass of 10kg. Which will move away with a higher velocity?

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

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?

Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron