Recent content by ccf788

So would its speed be the same as that in glass or would its speed be the same as that before it entered glass? I'm still confused.

A light ray in air enters and passes through a square block of glass. What can be stated with regard to its speed after it emerges from the block? a) Its speed is less than when in glass b) Its speed is less than before it entered glass c) Its speed is same as that in glass d) Its speed is...

Bill Bored is out to get his kicks. He starts playing Russian roulette with a 3.25 kg shot put. He takes his chances throwing the ball straight up into the air and waiting to see if the ball hits him in the head on its way down. Bill is 1.95 m tall and the ball rises 4.0 m above the point of...

Jane, looking for Tarzan, is running at top speed (5.6 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward? I know the answer is 1.6 m, but I don't understand how to get it. In class, we have been using the equation: 1/2mv^2 + mgy =...