If a mass weighing 56 lbs stretches a spring 6 inches what is the spring constant? if the mass has a velocity of 4 ft/sec and this results in a viscous resistance of 40 lbs what is the damping coefficient? assume 32 lb = 1 slug 32lb=1 slug

Keneila is attempting to ski down a 20 m high friction free hill for the first time. she has a speed 10 m/s at the top. what is her kinetic energy when she is a the bottom, 20 m ? (a)2500 j (b)9800 j (c)12300 j (d)3100j (e)15000j

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?

Why do astronauts in the space shuttle weigh less?