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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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A solenoid with an air core has a magnetic field pointing along its axis in the positive x direction. This solenoid is then fill
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What combination of variables will make an experiment the most reliable
Virty [35]

Answer:

Explanation:

A combination of two controlled variables will make an experiment the most reliable.

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It is important to have them in pair so that two values can be kept on changing in terms of any constant condition. This will help to get better results in over all experiment data.

4 0
2 years ago
. One long wire carries a current of 30 A along the entire x axis. A second-long wire carries a current of 40 A perpendicular to
d1i1m1o1n [39]

Answer:

magnitude of net magnetic field at given point is

B = 5 \times 10^{-6} T

Explanation:

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Now similarly magnetic field due to another wire which is perpendicular to xy plane is given as

i = 40 A

r = 2 m

now we have

B_2 = \frac{4\pi \times 10^{-7} (40)}{2\pi (2m)}

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5 0
3 years ago
You observe a hockey puck of mass 0.12 kg, traveling across the ice at speed 18.3 m/sec. The interaction of the puck and the ice
Galina-37 [17]

The stopping distance is 143.1 m

Explanation:

First of all, we have to find the acceleration of the hockey puck. This can be done by using Newton's second law of motion:

\sum F =ma

where

\sum F = F_f = -0.14 N is the net force acting on the puck (the force of friction, negative because it acts in a direction opposite to the direction of motion)

m = 0.12 kg is the mass of the puck

a is the acceleration

Solving for a,

a=\frac{\sum F}{m}=\frac{-0.14}{0.12}=-1.17 m/s^2

The motion of the puck is a uniformly accelerated motion, therefore we can use the following suvat equation:

v^2-u^2=2as

where:

v = 0 is the final velocity (the puck comes to a stop)

u = 18.3 m/s is the initial velocity

a=-1.17 m/s^2 is the acceleration

s is the stopping distance

And solving for s, we find

s=\frac{v^2-u^2}{2a}=\frac{0-(18.3)^2}{2(-1.17)}=143.1 m

Learn more about accelerated motion:

brainly.com/question/9527152

brainly.com/question/11181826

brainly.com/question/2506873

brainly.com/question/2562700

#LearnwithBrainly

6 0
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