The height h in feet of a projectile launched vertically upward from the top of a 96-foot tall tower has an initial velocity of 80 ft/sec.
•Write the equation that represents this scenario. [Select]
•What is the maximum height of the projectile? Select ]
•How long did it take the projectile to reach its maximum height? [Select ]
•How long will it take the projectile to hit the ground? Select]

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c