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Artemon [7]
3 years ago
14

What is the average velocity if the initial velocity of an object is 19 mph and the final velocity of 75 mph ?

Physics
1 answer:
olga2289 [7]3 years ago
6 0

Answer:

Hi I hope this is correct!

Explanation:

To find average velocity you can use the formula av = (v1 + v2) / 2

*I converted everything into m/s because that it usually the measurement for velocity*

v1 = initial velocity = 8.49376 m/s , v2 = final velocity = 33.528 m/s

av = 8.49376 + 33.528 / 2

    = 21.01088 m/s

*If you were required to leave the final answer in mph here it is

av = 19 + 75 / 2

    = 47 mph

Hope this helps! Best of luck <3

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Which of the following is a force?
lidiya [134]

Answer:

weight

Explanation:

The weight of an object is the force of gravity on the object and may be defined as the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton. Density is mass/volume.

8 0
3 years ago
A completely inelastic collision occurs between two balls of wet putty that move directly toward each other along a vertical axi
nexus9112 [7]

Answer:

y=2.64m

Explanation:

Given data

Ball one

mass m₁=3.0kg

velocity v₁=20 m/s

Ball second

mass m₂=2.0 kg

velocity v₂=12 m/s

First we need the speed of combined ball.Since the system conserves the linear momentum

p_{i}=p_{f}\\m_{1}v_{1}+m_{2}v_{2}=m_{t}v_{t}

So the combined velocity vt is:

v_{t}=\frac{m_{1}v_{1}+m_{2}v_{2}}{m_{t}}\\

Since the two balls 1 and 2 are moving in opposite direction

So

v_{t}=\frac{m_{1}v_{1}-m_{2}v_{2}}{m_{t}}\\

Substitute the given values

v_{t}=\frac{(3kg)(20m/s)-(2kg)(12m/s)}{(3+2)kg}\\ v_{t}=7.2 m/s

We have the equation for motion with constant acceleration is given by:

v^2=v_{o}^2+2g(y-y_{o})\\

At initial position y₀=0 and vt=v-v₀

So

v^{2}=v_{o}^2+2g(y-0)\\ y=\frac{v^2-v_{o}^2}{2g}\\ y=\frac{v_{t}^2}{2g}\\ y=\frac{(7.2m/s)^2}{2(9.8m/s^2)}\\ y=2.64m

   

8 0
3 years ago
Thank you if you them
astraxan [27]

Answer:

Explanation:

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5. You would get shocked in a bumper car by touching the floor and the ceiling at the same time. This means you are completing the circuit allowing electricity to flow.

6. Electricity from a wall outlet has enough energy to stop your heart.

7. Electricity is the flow of electrons, because electrons move or jump from atom to atom.

8. Materials that allow electrons to move easily from atom to atom are called conductors.

9. Materials that do not allow electrons to flow easily are called insulators.

10. Semi- conductors are materials that are somewhere in between .

11. Voltage is the force or pressure of electricity and is compared to the amount of water pressure in a hose.

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4 0
3 years ago
on a standard position vs time graph, the distance between two points on the horizontal axis represents the time interval, and t
Stels [109]

Answer: true

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3 0
3 years ago
A car traveling in a straight line at an initial speed of 8.0 meters per second accelerates uniformly to a speed of 14 meters pe
Whitepunk [10]

The equation we can use here is:

v^2 = v0^2 + 2 a d

where v is final velocity, v0 is intial velocity, a is acceleration and d is distance

 

14^2 = 8^2 + 2 a (44)

<span>a = 1.5 m/s^2</span>

4 0
3 years ago
Read 2 more answers
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