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hjlf
3 years ago
15

How to copy single slide to powerpoint

Computers and Technology
1 answer:
Vesnalui [34]3 years ago
4 0
Right click and press copy slide

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3.A ball is thrown into the air with an initial velocity of 15 m/s. a.How long does it take the ball to reach maximum height?b.W
ehidna [41]

Answer:  a) = 1.5 sec.  b= 11.5 m. c=0  d= 1.5 sec.

Explanation:

a) Once thrown into the air , the only influence on the ball is gravity, so, we can conclude that the acceleration acting on the ball is the one due to gravity, i.e., g= 9.8 m/sec².

Applying the definition of acceleration, we can write the following equation:

a= (vf-vo) / t   ⇒ g = vf-vo / t. (1)

Now, when the ball reaches to his maximum height, it stops momentarily, and then starts to fall, so for this height, we can write vf=0.

Replacing  in (1), and solving for t, we get:

t = (0 -vo) / g = -15 m/s/ - 9.8 m/sec² (Taking upward as positive  direction)

a) t= 1.5 sec.

Replacing this value in the kinematic equation for displacement, when vo=15 m/s, we get:

hmax: 15 m/sec . 1.5 sec -1/2. 9.8 m/sec². (1.5 sec) ² (2)

b) hmax= 11.5 m

c) vf= 0 (as explained above)

Finally, in order to know how long the ball takes to return to its initial height, we know that for the falling part of the trajectory, vo=0, so we can write the equation for displacement as follows:

h=-hmax (because it returns to the same starting point)= 1/2 gt²=-11.5 m

Solving for t, we get:

d) t=1.5 sec.

It can be seen that the time used in going up, it is the same for going down, to travel the same distance.

This result is completely general and applies to any free fall problem.

3 0
3 years ago
A ___ is a node (or a device) that connects two different networks together and allows them to communicate.
stellarik [79]

Answer:

The answer is Hub

Explanation:

A hub, also called a network hub, is a common connection point for devices in a network. Hubs are devices commonly used to connect segments of a LAN. The hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

7 0
3 years ago
How do you change the desktop background in the macos mojave operating system?
sleet_krkn [62]

Answer: Click the System Preferences icon on the dock. In the first row, click Desktop & Screen Saver.

Explanation: When it comes to macOS versions, Mojave and High Sierra are very comparable. The two have a lot in common, unlike Mojave and the more recent Catalina.

8 0
1 year ago
PC’s & More has shifted to sales and service of laptops and PCs, where it has the potential to triple the number of its cust
photoshop1234 [79]

Answer:

Growth Strategy

Explanation:

A growth strategy is a plan of action that allows you to achieve a higher level of market share than you currently have. Such as the case in the question, PC's shifted so sales and service of Laptops and PCs because there is a greater market share for them there than where they currently operate from.

5 0
3 years ago
Write a program for TIC TAC TOE in PYTHON
masya89 [10]

Answer: much too long to write here: see attached

Explanation:

3 0
3 years ago
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