A 7 kg sled is initially at rest on a horizontal road. the sled is pulled a distance of 2.9 m by a force of 42 n applied to the sled at an angle of 30o to the horizontal. find the change in the kinetic energy of the sled.

Why does a moving object come to a stop on a frictional surface?

Estimate the power you produce in running up a flight of stairs. Give your answer in horsepower (1 hp = 746 W). Suppose you climb one flight of stairs (3 m) in 10 seconds (you run up the stairs quickly). Estimate your mass to be 81 kg.

If you are walking or running at equal distances in equal amounts of time you are traveling at a (n) ___.

2. Explain why a coin placed at the bottom of a beaker containing water appears raised?

A horizontal force with a magnitude of 3.0 newtons applied to a 7.0 kilogram mass moves the mass horizontally a distance of 2.0 meters. Determine the work done against gravity in moving the mass. What is the formula that you use?

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.