Question

7) A ball is thrown in the air at an angle of 40° to the ground. If the maximum height it reaches is 10 m, what is the ball's initial velocity? (Take Earth's gravity as 9.8 m/s2.) (10 points) 8) You hit a ball horizontally from the top of a cliff that is 80m tall. The ball has an initial velocity of 10.0m/s. What is the horizontal range of the ball? (10 points) 9) Two objects, with the same size and weight, are thrown from the top of a building at the same time. Standing on the edge of the roof, the first is thrown straight down the side of the building with an initial velocity of 2.5m/s while the second is thrown at 5.0m/s at an angle 30° below horizontal. Which will hit the ground first if the building is 60m high? (10 points)

          7) A ball is thrown in the air at an angle of 40° to the ground. If the maximum height it reaches is
10 m, what is the ball's initial velocity? (Take Earth's gravity as 9.8 m/s2.) (10 points)
8) You hit a ball horizontally from the top of a cliff that is 80m tall. The ball has an initial velocity of
10.0m/s. What is the horizontal range of the ball? (10 points)
9) Two objects, with the same size and weight, are thrown from the top of a building at the same
time. Standing on the edge of the roof, the first is thrown straight down the side of the building
with an initial velocity of 2.5m/s while the second is thrown at 5.0m/s at an angle 30° below
horizontal. Which will hit the ground first if the building is 60m high? (10 points)

7) A ball is thrown in the air at an angle of 40° to the ground. If the maximum height it reaches is
10 m, what is the ball's initial velocity? (Take Earth's gravity as 9.8 m/s2.) (10 points)
8) You hit a ball horizontally from the top of a cliff that is 80m tall. The ball has an initial velocity of
10.0m/s. What is the horizontal range of the ball? (10 points)
9) Two objects, with the same size and weight, are thrown from the top of a building at the same
time. Standing on the edge of the roof, the first is thrown straight down the side of the building
with an initial velocity of 2.5m/s while the second is thrown at 5.0m/s at an angle 30° below
horizontal. Which will hit the ground first if the building is 60m high? (10 points)

Added by Crystal G.

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