2. Brian Berg of Iowa built a house of card 4.88m tall. Suppose Berg throws a ball from the ground level with a velocity of 9.98m/s straight up. What is the velocity of the ball as it first passes the top of the card house?
3. The sears Tower in Chicago is 443 m tall. suppose a book is dropped from the top of the building. what would be the book;s velocity at a point 221 m above the ground? Neglect air resistance.
4. The tallest roller coaster in the world is the Desperado in Nevada. It has a lift height of 64m. If an archer shoots an arrow straight up in the air and the arrow passes the top of the roller coaster 3.0 s after the arrow is shot what the initial speed of the arrow?
5. The tallest sequoia semiprecious tree in Californian's redwood national park is 111 m tall. Suppose an abject is thrown downward from the top of the tree with a certain initial velocity. If the object reaches the ground in 3.80s, what is the objects initial velocity?
6. the westin stamford hotel in Detroit is 228 m tall. If a worker on the roof drops a sandwich, how long does it take the sandwich to hit the ground, assuming there is no air resistance? How would air resistance affect the answer?
7. A man named Bungkas climbed a palm tree in 1970 and built himself a nest there. In 1994 he was still up there, and he had not left the tree for 24 years. Suppose Bungkas asks a villager for a newspaper, which is thrown to him straight up with an initial speed of 12.0 m/s. When Bungkas catches the newspaper from his nest, the newspaper's velocity is 3.0 m/s, directed upward. From this information, find the height at which the nest was built. Assume that the newspaper is thrown from height of 1.50m above the ground.
8. Rob Colley set a record in "pole-sitting" when he spent 42 days in a barrel at the top of a flagpole with a height of 43m. Suppose a friend wanting to deliver an ice-cream sandwich to colley throws the ice cream straight up with just enough speed to reach the barrel. How long does it take the ice-cream sandwich to reach the barrel?
9. A common flea is recorded to have jumped as high as 21cm. Assuming that the jump is entirely in the vertical direction and that air resistance is insignificant, calculate the time it take the flea to reach a height of 7.0 cmI need help with this physics problem please.?
hey i found all the answers from the work book they are here!!@!@! u got so lucky:
http://www.scribd.com/doc/26978901/Holt-鈥?/a>
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