A ball is thrown with a velocity of 20 m/s at an angle of 33 dergrees above the horizontal.  It hits a brick wall that is 25.0 m away. a) Draw a well labeled diagram of this trajectory, including labels for all relevant quantities including unknowns. b) Resolve the initial velocity into components.  Show these on your diagram above. c) Find the time of flight before it hits the wall. d) Find the height above the floor at the point that it hits. e) Find the time for the ball to reach the top of its trajectory.  Does it hit the wall before or after this point?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
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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A ball is thrown with a velocity of 20 m/s at an angle of 33 dergrees above the horizontal.  It hits a brick wall that is 25.0 m away.

a) Draw a well labeled diagram of this trajectory, including labels for all relevant quantities including unknowns.

b) Resolve the initial velocity into components.  Show these on your diagram above.

c) Find the time of flight before it hits the wall.

d) Find the height above the floor at the point that it hits.

e) Find the time for the ball to reach the top of its trajectory.  Does it hit the wall before or after this point?

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I do not understand how in part e, t = t/2 = V0sin33/g

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