8) A ball is thrown up from the top of a building 55.0 m high. It rises to a maximum height of 20.0 m above the roof. (a) When does it land on the ground below? (b) At what velocity does it land? (c) When is it 20.0 m below the roof?

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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Number 8 part a b and c how do we solve for formula and calculate ?
6) An object moves with constant acceleration. At 1= 2.50 s, the position of the object is
x= 2.00 m and its velocity isy=4.50 m/s. At -7.00 s, v= -12.0 m/s. Find: (a) the
position and the velocity at t=0; (b) the average speed from 2.50 s to 7.00 s, and (c) the
average velocity from 2.50 s to 7.00 s.
7) A ball thrown vertically up from the ground rises to height of 24.0 m. How high would it rise
on the moon if given the same initial speed? The acceleration due to gravity on the moon is one-
sixth that on earth.
8) A ball is thrown up from the top of a building 55.0 m high. It rises to a maximum height
of 20.0 m above the roof. (a) When does it land on the ground below? (b) At what velocity
does it land? (c) When is it 20.0 m below the roof?
Transcribed Image Text:6) An object moves with constant acceleration. At 1= 2.50 s, the position of the object is x= 2.00 m and its velocity isy=4.50 m/s. At -7.00 s, v= -12.0 m/s. Find: (a) the position and the velocity at t=0; (b) the average speed from 2.50 s to 7.00 s, and (c) the average velocity from 2.50 s to 7.00 s. 7) A ball thrown vertically up from the ground rises to height of 24.0 m. How high would it rise on the moon if given the same initial speed? The acceleration due to gravity on the moon is one- sixth that on earth. 8) A ball is thrown up from the top of a building 55.0 m high. It rises to a maximum height of 20.0 m above the roof. (a) When does it land on the ground below? (b) At what velocity does it land? (c) When is it 20.0 m below the roof?
Expert Solution
Step 1

8) height of building (h)= 55 m maximum height above the roof (h') = 20 m 

 

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