Answer:
44.3 m/s
Explanation:
Given that a ball is thrown horizontally from the top of a building 100m high. The ball strikes the ground at a point 120 m horizontally away from and below the point of release.
What is the magnitude of its velocity just before it strikes the ground ?
The parameters given are:
Height H = 100m
Since the ball is thrown from a top of a building, initial velocity U = 0
Let g = 9.8m/s^2
Using third equation of motion
V^2 = U^2 + 2gH
Substitute all the parameters into the formula
V^2 = 2 × 9.8 × 100
V^2 = 200 × 9.8
V^2 = 1960
V = 44.27 m/s
Therefore, the magnitude of its velocity just before it strikes the ground is 44.3 m/s approximately
Order to ensure a message is understood requires all four option is needed.
The option will be D.All of the above.
<h3>
What is a good communication skill?</h3>
- The sender is the person who is trying to communicate a message.
- The challenge is that since the receiver’s education and experience may be very different from the sender's, words often have different meanings.
- While we may carefully choose the words to speak, words alone represent a small percentage.
- communication is only verbal the most important element of communication
- When encountering a noise, take steps to reduce the distraction.
Learn more about speaking skills here:-brainly.com/question/25645043
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A scalar quantity is one in which there is no direction given.
30 Lbs would be the answer, since there is no indicator of direction.
