You are serving the volleyball for the second time in a volleyball game. If the ball leaves your hand with twice the velocity it had on your first serve, its horizontal range R (compared to your first serve) would be

A) twice as much.
B) half as much.
C) times as much.
D) four times as much.
E) 2 times as much.


D

Physics & Space Science

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A skier leaves a ski jump with a horizontal velocity of 29.4 m/s. The instant before she lands three seconds later, the magnitudes of the horizontal and vertical components of her velocity are:

a. 0; 29.4 m/s. b. 29.4 m/s; 0. c. 29.4 m/s; 29.4 m/s. d. 29.4 m/s; 41.6 m/s. e. 41.6 m/s; 41.6 m/s.

Physics & Space Science

A particle with charge q is located inside a cubical gaussian surface. No other charges are nearby. If the particle is at the center of the cube, what is the flux through each one of the faces of the cube?

1. 0 2. q/2?0 3. q/6 ?0 4. q/8 ?0 5. depends on the size of the cube

Physics & Space Science

In western movies you often see a person putting his ear against the rails in the train tracks to find out if a train is approaching

Why would this give him advance knowledge of the approach of a train?

Physics & Space Science

An outcome of universal gravitation is that

A) planets aren't cubes with sharp corners. B) its discovery prompted other laws of nature. C) it provided prediction and discovery of planets. D) all of the above

Physics & Space Science