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Ipatiy [6.2K]
3 years ago
5

How does the graph of velocity vs. time look for something with a constant positive acceleration?

Physics
1 answer:
Pie3 years ago
8 0

Answer:

The correct answer is option b.

Explanation:

In velocity vs time graph, vertical axis represent velocity vector and horizontal axis represents time. The slope of the line obtained in this graph is equal to the acceleration.

Slope= \frac{Velocity}{Time}=Acceleration

  • If the line is straight makes an acute angle with horizontal axis then it is considered as positive acceleration.
  • If the line is straight makes an obtuse angle with horizontal axis then it is considered as negative acceleration or deceleration.

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When motion IS changing directions, acceleration is the rate at which ________changes, but when motion is NOT changing direction
iVinArrow [24]
The best and most correct answer among the choices provided by your question is the second choice or letter B.

<span>When motion IS changing directions, acceleration is the rate at which velocity changes, but when motion is NOT changing direction, acceleration may be expressed as the rate at which speed changes.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
6 0
3 years ago
The gravitational force between two objects is ______ proportional to the products of the masses and _______ proportional to the
Rudiy27

directly, inversely ... newton's grav eqn

6 0
3 years ago
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HELP PLEASE!!!
irakobra [83]

Answer:

10kN

Explanation:

Given data

m1= 50kg

u1= 3m/s

m2= 100kg

u2= 6m/s

v1= 2m/s

time= 0.04s

let us find the final velocity of Bruce v1

from the conservation of linear momentum

m1u1+m2u2=m1v1+m2v2

substitute

50*3+100*6= 50*v1+100*2

150+600=50v1+200

750-200=50v1

550= 50v1

divide both sides by 50

v1= 550/50

v1=11 m/s

From

F= mΔv/t

for Bruce

F=50*(11-3)/0.04

F=50*8/0.04

F=400/0.04

F=10000

F=10kN

for Max

F=100*(6-2)/0.04

F=100*4/0.04

F=400/0.04

F=10000

F=10kN

6 0
3 years ago
Four identical metallic objects carry the following charges 1.82 6.65 4.80 and 9.30 C The objects are brought simultaneously int
GuDViN [60]

Answer:

a) 5.64 C

b) 3.5*10¹⁹ protons

Explanation:

a)

  • Since the four metallic objects are identical, and total charge must be conserved, this means that after brought simultaneously into contact so that each touches the others, once separated, total charge must be the same than before being brought in contact.
  • But due they are identical, after charges were able to transfer freely between them, the four objects must have the same final charge, i.e. the fourth part of the total charge, as follows:

       Q_{n} = \frac{Q_{tot}}{4} = \frac{22.57C}{4} = 5.64 C  (1)

b)

  • This charge will be divided between n protons, since the charge is positive.
  • Since each proton carries a charge equal to the elementary charge e, which value is 1.6*10⁻¹⁹ C, we can find the number of protons in excess, doing the following calculation:
  • n_{p} =\frac{Q_{n}}{e} = \frac{5.64C}{1.6e-19C} = 3.5 e19 C (2)

7 0
3 years ago
K2O Use IUPAC nomenclature rules to properly identify this compound. A) potassium oxide B) dipotassium oxide C) potassium (I) ox
Lostsunrise [7]
This molecule is formed between a not very electronegative metal and a very electronegative nonmetal which means it should be an ionic compound which would mean that it would have the name of potassium oxide.

look up the naming rules for ionic compounds.  I would explain it here but I don't know how to explain naming the anion part of the molecule other than it ends in ide since it is a monoatomic anion which is why oxide is in the name instead of oxygen.

I hope this helps.  Let me know if anything is unclear or needs more explanation.
6 0
3 years ago
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