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3 years ago

Witch of the following is an example of a pull

1 answer:

8 0

To pull is defined as to make something move toward something else by tugging or dragging. An example of pull is hitching a trailer to a car and moving it down the street. An example of pull is someone bringing a door toward themselves to open it.

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A test car is driving toward a solid crash-test barrier with a speed of 46 mi/h. Two seconds prior to impact, the car begins to

Mekhanik [1.2K]

Answer:

we have to measure distances and time, possibly with an automated system since the values are very small

Explanation:

For this exercise we can use the relationship between momentum and momentum

I = ∫ F dt = Δp

F t = m $v_{f}$ - mv₀

In the exercise they indicate that the final speed is zero

F t = - m v₀

F = -m v₀ / t

With this equation we can find what measurements should be carried out.

To find the speed with which the car collides with the wall, less measure the displacement and its time during the braking process before reaching the wall and from here find the speed with which it reaches the wall.

During the impact, we must find the time that the vehicle is in contact with the wall in the first approach is equal to the time that the car takes to reach the final speed of zero.

In summary we have to measure distances and time, possibly with an automated system since the values are very small

4 0

3 years ago

The measured value of mass M in an experiment is M = 0.743 ± 0.005kg. The error in 2M is

omeli [17]

Given the measured value of mass M in the experiment the error in 2M is ; dM

<u>Given data :</u>

Measured value of mass M = ( 0.743 ± 0.005 ) kg

<h3>The error in 2M in the measured value </h3>

The error in 2M in the measured value M = 0.743 ± 0.005 kg is dM while the error in M² will be 2dM

Hence we can conclude that the measured value of mass M in the experiment the error in 2M is ; dM.

Learn more about error in 2M : brainly.com/question/6650225

8 0

2 years ago

Identify whether each item is an example of science or technology.

Readme [11.4K]

Windmill- Science
Maglev Train- Technology

Hopefully these are right

7 0

3 years ago

Ice is put in a cooler to cool the contents. to speed up the cooling process, the ice can be?

QveST [7]

Crushing increases the ice's surface area. Additionally, cooling from ice happens as a result of convection, which is proportional to area. Thus, breaking up the ice expedites the cooling process.

<h3>What is cooling process?</h3>

When precise and consistent temperature control inside a process is necessary, this sort of cooling is used. Because they can offer cooling capacity independent of variations in the ambient temperature, heat load, and flow needs of the application, chillers are frequently employed to remove heat from a process.

It's important to properly regulate the heat load in many industrial operations. Different components of the whole application might need to be cooled.

Major locations for cooling include:

Direct product cooling

During the molding process, plastic

milling metal products

To know more about cooling process, visit;

brainly.com/question/4385546

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5 0

2 years ago

A man (weighing 763 N) stands on a long railroad flatcar (weighing 3513 N) as it rolls at 19.8 m/s in the positive direction of

Burka [1]

Answer: