How do we define energy efficiency? A. The ratio of the actual output energy to the input energy

B. The ratio of the power gain to power loss

C. The product of input power and output power

D. The sum of potential and kinetic energy

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

Which type of wave can travel without a medium

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?