Question
Asked Sep 13, 2019
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A quarterback can throw a receiver a high, lazy "lob" pass or a low, quick "bullet" pass. These passes are indicated by curves 1 and 2, respectively, in the figure (Figure 1).

The bullet pass is thrown with a launch angle of 24.0 ∘. What is the initial speed of this pass?

What is the time of flight of the bullet pass?

 

y(m)
15
1
10
2
5 10
25 3035 (m)
15 20
LO
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y(m) 15 1 10 2 5 10 25 3035 (m) 15 20 LO

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Expert Answer

Step 1
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Given Range of progectile motiom, R= 35 m Acce leraton duce to goavity, g = 9.81 m/s Launch angle, e= 24

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Step 2
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U2sinze kange of praJectile R = R Time f ignt, T= 20sine Coso ohere, U intial velocity , g is acceleration due to gravity, Ris the 2nnge, Ti time of foight, and e A the launched angle

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Step 3
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Rearang fing the Range Squatken Ra Sin 20 (35m)(1.81 m/s3 Sin(2x 24:0 =21. 49 m/s

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Science

Physics

Kinematics

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