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VashaNatasha [74]
3 years ago
10

A cat runs at 2 m/s for 3 s and then slows to a stop with an acceleration of 0.80 m/s2. What is

Physics
1 answer:
sp2606 [1]3 years ago
7 0

Answer:

see that the correct one is B

Explanation:

To solve this exercise let us use the kinematic relations

           v² = v₀² - 2 a x

as they indicate that the car stops, therefore the final speed is yield v = 0

          x = v₀² / 2a

let's calculate

          x = 2²/(2 0.8)

         x = 2.5 m / s²

When reviewing the answers we see that the correct one is B

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The value of a car after 5 years is a quantitative data. True or False
NeX [460]

Answer:

true

Explanation:

7 0
3 years ago
Read 2 more answers
A block of mass 3.5 kg displaces 1000 cm ^3 of water when fully immersed inside. The upthrust on body will be what​.
Arturiano [62]

Given :

  • Mass of block = 3.5 kg
  • Weight of Block = 3.5 kgf
  • Volume of water displaced when body is fully immersed = 1000 cm³

Answer:

For calculating Upthrust on block we will have to first find out Volume of block :

↪Volume of block = Volume of water displaced

↪ Volume of block = 1000 cm³ = 0.001 m³

<h2>________________</h2>

Now, <u>we will calculate the Upthrust on block</u>:

↪ Upthrust on block = Volume of block * Density of water * g

↪ Upthrust on block = 0.001 * 1000 * g

↪ Upthrust on block = 1 kgf

4 0
3 years ago
Assuming no air resistance, all projectiles have:
MaRussiya [10]

Answer: Option C

C) accelerated vertical motion and constant horizontal motion.

Explanation:

If there is no air resistance then during the projectile movement the only force that causes an acceleration is the gravitational force.

We know that this force produces an acceleration of 9.8 m / s ^ 2 in the projectile.

As the gravitational force attracts the object towards the earth, then the acceleration that this force produces is always in the vertical direction. In the horizontal direction the object is not accelerated (because there is no air resistance).

Therefore the correct answer is option C.

"accelerated vertical motion and constant horizontal motion".

4 0
2 years ago
If a neutral atom has 25 protons in its nucleus. What is the number of surrounding electrons? Explain your answer.
Darina [25.2K]

Final Answer: 25 electrons

Explanation/Reasoning:

Hey there!

The number of protons in the nucleus of a neutral atom would have 25 protons. This is because it is equal to the atomic number.

The number of protons is equal to the number of electrons. So for our answer, the number of atoms in a neutral atom will be 25 electrons because the neutral atom had 25 protons.

~I hope I helped you :)~

6 0
3 years ago
Read 2 more answers
The current in the wires of a circuit is 60.0 milliAmps. If the voltage impressed across the ends of the circuit were doubled (w
Pavel [41]

Answer:

120 mA

Explanation:

The relationship between voltage, current and resistance in a circuit is given by Ohm's law

I=\frac{V}{R}

where

I is the current

V is the voltage

R is the resistance

In this problem, we have an initial current of

I = 60 mA

Then the voltage is doubled:

V' = 2 V

while the resistance is kept the same:

R' = R

So the new current is

I' = \frac{V'}{R'}=\frac{2V}{R}=2\frac{V}{R}=2 I

so, the current has doubled. Since I = 60 mA, the new current is

I' = 2(60 mA)=120 mA

3 0
3 years ago
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