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4 years ago

7

A car advertisement claims their car can go from a stopped position to moving 60 miles per hour in 5 seconds. The advertisement

is describing the car's

2 answers:

swat324 years ago

8 0

I do not understand what your saying could u plz be more specific?

alexandr402 [8]4 years ago

6 0

this is measuring the vehicles acceleration.

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Why is the pipe that carries the heated glycol from the box to the tank at an angle?

Alik [6]

Answer:

Bok.............................

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3 years ago

Suppose you are driving a car, and a cup of coffee is on the seat beside you. Choose the frame with respect to which the cup is

Reil [10]

We want to find the frame of reference (viewpoint) where the cup of coffee inside your car moves the fastest.

The correct option will be A, the astronaut in the ISS.

---------------------------------

Let's see how to get the correct option, first, remember that the frame of reference means the "viewpoint" that you are taking. So we need to find the viewpoint where the cup of coffee moves faster.

Now just let's analyze all the given options to <u>see in which one the cup moves fastest.</u>

A) Here the astronaut sees the car moving, so here the cup has the speed of the car, and the astronaut is also moving. Remember that the International Space Station orbits with a speed of 7.6km/s (this is really fast). So in the frame of reference of the astronaut, he/she is at a stop, so this velocity is assigned to all the other objects. Thus, he sees the cup of coffee moving really fast.

B) In it's own frame of reference, the cup does not move.

C) The observer will see the car moving, and the cup is inside the car, so in this frame of reference the <u>velocity of the cup is the same as the one of the car.</u>

D) The incoming car has a given velocity V', from this frame, the car with the cup of coffee will have its own velocity plus the V' of the incoming car, so from this frame <u>the velocity of the cup of coffee is larger than the velocity of the car with the cup.</u>

E) You are driving the car with the cup of coffee, so the cup of coffee is always next to you, so in this frame, <u>the cup does not move.</u>

<u></u>

Concluding, is easy to see that the frame of reference where the cup moves the fastest is in the first one, for the nature of the <u>astronaut's frame of reference velocity</u>, he/she will see the cup moving the fastest.

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8 0

2 years ago

Find the displacement of a car that accelerates at -6m/s2 for 5 sec to a final velocity of 60m/s.

Anvisha [2.4K]

Answer:

Explanation:

2as=vf²-vi²

2as=(60)²-0²

2as=3600 m/s

s=3600/2*a

s=3600/2*(-6)

s=3600/-12

s=-300 m

3 0

3 years ago

Which of the following is necessary for the greenhouse effect?

Mice21 [21]

It is the atmosphere

3 0

3 years ago

a radio controlled car rolls 10 m south then reverses direction and rolls 8 m north the car traveled a distance of 18 m and has

EastWind [94]

The displacement is 2 m south

Explanation:

Distance and displacement are two different quantities:

Distance is the total length of the path covered by an object during its motion, regardless of the direction. It is a scalar quantity
Displacement is a vector connecting the initial position to the final position of motion of an object. The magnitude of the displacement is the distance in a straight line between the two points

For the car in this problem, the motion is:

10 m south

8 m north

Taking north as positive direction, we can describe the two parts of the motion as

$d_1 = -10 m$

$d_2 = +8$ m

Therefore, the final position of the car with respect to the original position is

$x_f = -10 + 8 = -2 m$

which means 2 m south: so, the displacement of the car is 2 m south.

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5 0

3 years ago