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1. A ball is released, rest, and drops straight down 965 m. a. How long will...

1. A ball is released, rest, and drops straight down 965 m.
a. How long will it take to hit the ground?
b. How long will it take to reach the ground if the ball is thrown down with an initial speed of 40 m/s?

2. A soccerball is released, rest, and drops straight down 1678 m.
a. How long (in hours) will it take to hit the ground?
b. How long (in hours) will it take to reach the ground if the soccerball is thrown down with an initial speed of 30 km/hr?

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