What is the best hypothesis to use for this investigation

A 0.280-kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (A) What is the mass of the second ball?

When discussing newtons laws of motion, which terms do people most likely use when talking about Newton's 3rd law of motion?

A shot hitting the birdie high and deep to the backcourt is called what

A ship was traveling across the Atlantic Ocean. It traveled 2,000 kilometers at a rate of 40 kilometers per hour. How long did it take the ship to travel this distance? A. 0.02 hr B. 40 hr C. 50 hr D. 80,000 hr

Calculate the intrapleural pressure if atmospheric pressure is 765 millimeters of mercury, assuming that the subject is at rest (not inhaling or exhaling). A. 4 millimeters of mercury B. 0 millimeters of mercury C. 761 millimeters of mercury D.

If you combine 430.0 ml of water at 25.00 °c and 140.0 ml of water at 95.00 °c, what is the final temperature of the mixture? use 1.00 g/ml as the density of water. s

While working out, a man performed 200 j of work in 3 seconds. What was his power?

A funnel-shaped low pressure closure

A rubber rod can be charged negatively when it is rubbed with wool. predict what happens when you rub a copper rod with wool

A copper rod is 0.450 m long. Heat is added to the rod until it expands by 0.00130 m. How much did the temperature change? (Unit=C)