3) A ball is thrown vertically upward from the top of a building at 10 m/s and hits the ground in 10.0 seconds. a. How much time does it take to reach the top of its path?
b. How long will it take to fall the height of the building?
c.
What is the speed of the ball just as it hits the ground?
d. What height was it thrown from?

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Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.