During her speed walking training session, Megan walks 1200 m in 450 seconds. a) What is her speed in m/s?( Round your answer to the nearest tenth) b) Using the conversion factors 1 m = 3.3 ft, 5280 ft = 1 mile, and 1 hour = 3600 s, determine Megan's speed in miles per hour.

Awheel rotates without friction about a stationary horizontal axis at the center of the wheel. a constant tangential force equal to 82.0 n is applied to the rim of the wheel. the wheel has radius 0.150 m . starting from rest, the wheel has an angular speed of 12.8 rev/s after 3.88 s. what is the moment of inertia of the wheel?

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This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?