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Delicious77 [7]
3 years ago
5

An object in projectile motion will follow which path? a]curved up from the ground b]curved down toward the ground c]straight do

wn toward the ground d]straight up from the ground
Physics
2 answers:
Lesechka [4]3 years ago
7 0
It's B because when you throw something it doesn't go up it slowly descends downward
aev [14]3 years ago
7 0

Answer: b] curved down toward the ground

Explanation:

When a body is thrown at an angle from the base, it takes a curved path. It is known as projectile motion. The body moves to the highest point and then falls under gravity.

In horizontal direction, the body has constant velocity as no acceleration acts in this direction. In the vertical direction, acceleration due to gravity acts. Because of the combined effect, the body moves in a curved path towards the ground. The path is curved down towards the ground.

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A mass moves back and forth in simple harmonic motion with amplitude A and period T.
Sever21 [200]

a. 0.5 T

- The amplitude A of a simple harmonic motion is the maximum displacement of the system with respect to the equilibrium position

- The period T is the time the system takes to complete one oscillation

During a full time period T, the mass on the spring oscillates back and forth, returning to its original position. This means that the total distance covered by the mass during a period T is 4 times the amplitude (4A), because the amplitude is just half the distance between the maximum and the minimum position, and during a time period the mass goes from the maximum to the minimum, and then back to the maximum.

So, the time t that the mass takes to move through a distance of 2 A can be found by using the proportion

1 T : 4 A = t : 2 A

and solving for t we find

t=\frac{(1T)(2 A)}{4A}=0.5 T

b. 1.25T

Now we want to know the time t that the mass takes to move through a total distance of 5 A. SInce we know that

- the mass takes a time of 1 T to cover a distance of 4A

we can set the following proportion:

1 T : 4 A = t : 5 A

And by solving for t, we find

t=\frac{(1T)(5 A)}{4A}=\frac{5}{4} T=1.25 T

6 0
3 years ago
When you are ice skating, to get started, you push your stake backwards on the ice and, as a result, begin to move forward. whic
LUCKY_DIMON [66]

C. Newtons third law of motion

Because eventually, the frictional forces will slow you to a halt. Newton's Third Law of Motion For every action there is an equal and opposite reaction. When they push off against the ice, or "stroke" with their skates, they are applying a force down and back against the ground.

Hope this helps!

8 0
3 years ago
An object attached to one end of a spring makes 20 vibrations in 10 seconds. Its angular frequency is: 0. 79 rad/s 1. 57 rad/s 2
morpeh [17]

Angular frequency in radian per second for 20 vibrations in 10 seconds is 12.6 rad/s

<h3>What is Angular frequency?</h3>

Angular frequency is the number of vibrations in radian per second.

The total number of vibrations n is 20 and the time taken for these vibrations is 10 s

The frequency of the vibrations will be

f = 20 / 10 = 2 Hz

Angular frequency is related to the frequency as

ω = 2πf

ω=2π × 2

ω = 12.6 rad/s

Thus, the angular frequency is 12.6 rad/s.

Learn more about Angular frequency.

brainly.com/question/14244057

#SPJ

5 0
2 years ago
If a rock were dropped from a building it would hit the ground with a certain kinetic energy and velocity. If it fell from a roo
STALIN [3.7K]

Answer:

no

Explanation:

because if you test it they hit the ground at the same time.

5 0
3 years ago
Where is Jesus located, I would like to pay him a visit ;)
Marina86 [1]

Answer:

Jesus is in everyone's heart...

Just try to find him..:D

5 0
3 years ago
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