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almond37 [142]
4 years ago
12

(99 Points) In the Position versus Time Graph of an object moving in a straight line, does the graph show acceleration during th

e interval from time equals two hours to time equals three hours?

Physics
2 answers:
hoa [83]4 years ago
6 0
In position time graphs, otherwise known as distance time graphs, acceleration/decceleration occurs when the line curves, which looks like the picture I've included.

In hours 2 to 3, the object does not accelerate, but instead stays at a constant speed of 20m per hour.

azamat4 years ago
5 0
No, the object is not accelerating because acceleration occurs if the object has a change in speed or direction. 
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You drop a rock into a pond, and water waves spread out in circles. (a) The waves carry water outward, away from where the rock
coldgirl [10]

Answer:

Explanation:

wave motion is defined as the propagation of the disturbance due to continous vibration of the molecules of the medium. Waves oduced due to disturbance carry only energy but not the matter.

The waves move water up and down and carry the energy.

Therefoe, the statement "(a) The waves carry water outward away from where the rock hit. The moving water carries energy outward"is incorrect.

The waves move water up and down and carry the energy, but not matter.

Therefore, the statement "(c) The waves ony make the water move u and down. No energy is carried outward from where the rock hit" is incorrect.

When a rock is droed ito a pd, a disturbance starts from the point where the stone hits the water. The waves produced carry the energy from the starting point toother locatons over a large distance which is not possible by the single molecules of water.

Therefore, the statement "(c) The waves only make the water move up and down, but the waves do carry energy outward away from where the rock hit" is correct.

4 0
3 years ago
A box of books is in the floor. The following picture shows a push and a pull acting in the box.
nataly862011 [7]
Net force = 50 + 50 = 100 M
Since two forces act towards the same direction , total force should be their sum amd towards the same direction as the two forces
8 0
3 years ago
Can an igneous rock become another igneous rock? If so, how?
MArishka [77]

Yes a igneous rock can be changed into another igneous rock. the reason behind it is when rocks melt they become magma or lava. when lava flows on the surface of the earth it crystallizes quickly and makes small crystals. but when they cool slower they make larger crystals. yes igneous rocks can change but only through extreme temperatures.

5 0
4 years ago
B Minerals must be solid, have an orderly atomic structure, have a recognized chemical composition, be naturally occurring, and
zubka84 [21]

Answer:

Minerals must be solid, have an orderly atomic structure, have a recognized chemical composition, be naturally occurring and <u>inorganic in origin</u>.

Explanation:

6 0
3 years ago
A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 836 N.
Likurg_2 [28]
The answers to the problem are as follows:

  <span>a) use f=ma. Mass of student is 836/9.8=85.3kg, force is 935-836=99N. Put it into the formula you will get a=99/85.3 

b)Use same formula. Force is 782-836=-54 so put it into formula a=-54/85.3 

c)Stopping would take longer as the acceleration is smaller 


I hope my answer has come to your help. God bless and have a nice day ahead!</span>
5 0
4 years ago
Read 2 more answers
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