If a ball is thrown into the air with a velocity of 40 ft/s, its height in feet after t seconds is given by y=40t−16t2. (a) find the average velocity for the time period beginning with t=2 and (1) lasting 0.5 seconds: -32 ft/s (2) lasting 0.1 seconds: -25.6 ft/s (3) lasting 0.05 seconds: -24.8 ft/s (4) lasting 0.01 seconds: -24.16 ft/s (b) find the instantaneous velocity when t=2: ft/s

An object's buoyant force and weight mean the same thing.a. trueb. false

What occurs during a combustion reaction

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?