Review | ConstantsA baseball is hit with a speed of 30.0 m/s at anangle of 40.0 ° . It lands on the flat roof of a 12.0 m-tall nearby building.Part AIf the ball was hit when it was 1.0 m above the ground, what horizontal distance does ittravel before it lands on the building?Express your answer using two significant figures.ΑΣφAx =Previous Answers Request AnswerSubmit

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Asked Nov 15, 2019
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I'm very confused on how to do this problem.

Review | Constants
A baseball is hit with a speed of 30.0 m/s at an
angle of 40.0 ° . It lands on the flat roof of a 12.0 m
-tall nearby building.
Part A
If the ball was hit when it was 1.0 m above the ground, what horizontal distance does it
travel before it lands on the building?
Express your answer using two significant figures.
ΑΣφ
Ax =
Previous Answers Request Answer
Submit
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Review | Constants A baseball is hit with a speed of 30.0 m/s at an angle of 40.0 ° . It lands on the flat roof of a 12.0 m -tall nearby building. Part A If the ball was hit when it was 1.0 m above the ground, what horizontal distance does it travel before it lands on the building? Express your answer using two significant figures. ΑΣφ Ax = Previous Answers Request Answer Submit

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Expert Answer

Step 1

the effective distance reached is 11 m.

the time required to reach to this height is, 

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1 s =(usin 40.0)t- ar

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Step 2

here, u is the initial speed and acceleration is the acceleration due to gravity, or -9.80 m/s^2

substitute the given values, 

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11.0m (30.0m/s) sin 40.0° (t)+(-9.80m/s*)t* 0 (4.90m/s)r-(19.3 m/s) t+11.0m -(-19.3m/s))-(19.3m/s) -4(4,90m/s' )11.0m 2(4.90m/s2 t= 19.3m/st12.5m/s 9.80m/s =3.24s or 0.69s t

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Step 3

since the ball lands and falling downward, thus the time wi...

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d (ucos 40.0

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