A 700-watt gasoline engine and a 300-watt electric motor both do 3 J of work. Which machine can do the work faster? Explain your answer.

A toy projectile is fired from the ground vertically upward with an initial velocity of 26.5 m/s. The project arrives at its maximum altitude in 2.7s. What is the velocity of the projectile when it hits the ground? How?

Complete these questions on your own paper or word document. When you are done, you will submit your answers for grading. You must show all of your work to receive full credit.

A constant force of 560 n was applied to a rock. If 2700j of energy was used to move the rock, how far did the rock move

What is the escape speed of an electron launched from the surface of a 1.1-cm-diameter glass sphere that has been charged to 8.0 nc?

Arena is accelerating her car at a rate of 46 mis2 for 10 seconds. Her starting velocity was 0 mis Whates her final velocity? 23 mis 45 is mis

The doppler effect is the change in observed frequency due to

Which of the following is NOT a vector quantity? (A) Acceleration (B) Average velocity (C) Linear momentum (D) Potential energy (E) Force

Which of Newton's laws of motion is demonstrated by a hammer pounding a nail into a board

Heated air molecules in a hot air balloon soon carried thermal energy to the top of the balloon. this is an example of ... conduction. Convection. Radiation. Cooling.

When you are ice skating, to get started, you push your skate backwards on the ice and, as a result, begin to move forward. Which law of motion is being described in this scenario?