A 12-kg sled is moving at a speed of 2.0 m/s. At which of the following speeds will the sled have twice as much kinetic energy? A. 2.8 m/s B. 4.2 m/s C. 6 m/s D. none of the above

This person does work to stretch the rubber band. When will the potential energy be the greatest?

The atoms in the answer choices have at least 2 electron shells each. Which atom would tend to lose 1 valence electron to another atom in order to become stable? A) C B) O C) Na D) Ar

In a circus performance, a monkey is strapped to a sled and both are given an initial speed of 2.0 m/s up a 20.0° inclined track. The combined mass of monkey and sled is 24 kg, and the coefficient of kinetic friction between sled and incline is 0.20.

What is Mach 2 in miles per hour?

What are the particles called in a current?

If a space ship is traveling with a constant acceleration of 75 m/s^2 and travels for three weeks, how far did it travel and what was it's velocity before it stopped?

How could you change your track to maximize the kinetic energy of the skater? Explain?

3. However, until 2002, these three countries used different A. currents B. undercurrent C. currencies D. currency E. crosscurrent F. current G. currently

In the hydrologic cycle, water evaporates into the atmosphere. It then condenses and falls to the ground as precipitation. How can the water return to the atmosphere?

List 6 Physical properties List 6 Chemical properties