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nevsk [136]
3 years ago
11

A golf ball is struck at ground level. The speed of the golf ball as a function of the time is shown in Figure 4-36, where t = 0

at the instant the ball is struck. The scaling on the vertical axis is set by va=16 m/s and vb=32 m/s. Answer the following questions:
(a) How far does the golf ball travel horizontally before returning to ground level?
(b) What is the maximum height above ground level attained by the ball?
Physics
2 answers:
Artemon [7]3 years ago
4 0

Answer:

Explanation:

initial total speed of the ball is given as

v_b = 32 m/s

minimum speed during its trajectory

v_a = 16 m/s

now the speed in x direction will be the minimum speed

v_x = 16 m/s

also we know that

v_y^2 + v_x^2 = 32^2

v_y^2 + 16^2 = 32^2

v_y = 27.7 m/s

now total time of the flight

T = \frac{2v_y}{g}

T = \frac{2(27.7)}{9.8} = 5.65 s

now horizontal range will be

R = 16(5.65) = 90.5 m

Part b)

as we know that at maximum height vertical velocity is zero

so we will have

v_{fy}^2 - v_{iy}^2 = 2as

now we have

0 - 27.7^2 = 2(-9.8)(H)

H = 39.15 m

lana66690 [7]3 years ago
3 0
In your question where as a golf ball is struck at a ground level and the speed of the ball as a function of time is in the figure where time t=0 and va = 16m/s and vb=32m/s. The following is the answer: 
a) How far does the golf ball travel horizontally before returning to ground level? 
-<span>80m</span>
<span>(b) What is the maximum height above ground level attained by the ball?
</span>-39.87m
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