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4 years ago

Choose an example of a vertical motion with a negative velocity and a negative acceleration.

Physics

1 answer:

serious [3.7K]4 years ago

4 0

Answer:

A body falling down towards earth, when upward direction is considered as positive direction got negative velocity and acceleration.

Explanation:

You are standing on top of a building with certain height, H and you select height of building to be positive. If you throw a stone upward it's displacement is increasing and velocity is decreasing, both of them are positive and it is attracted towards earth by an acceleration so it is downward. SO it's value is negative.

After reaching the maximum height the stone comes down and it's velocity increases in the downward direction, in this situation it is having negative velocity and and negative acceleration.

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Match the object to the type of motion it's displaying. which letter goes with which number?

makkiz [27]

Hello There!!

I think the best answer choice is:

A.  $Linear$ $motion$

B.  $Rotational$ $motion$

D. $Vibrational$ $motion$

4. $Runners$ $sprinting$ $across$ $a$ $straight$ $track$

C. $Curvilinear$ $motion$

3. $Music$ $being\\\\\\$ $played$ $on$ $a$ $stringed$ $instrument,$ $such$ $as$ $a$ $guitar$

2.  $A$ $car$ $driving$ $up$ $a$ $winding$ $mountain$ $road$

1.  $The$ $propeller$ $of$ $an$ $aircraft$ $in$ $midair$

I'm not sure this is 100% right....

P.S Tell me if this is wrong....

$Hope This Helps$ $Sangwoo!!$

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# $Always$ $Brainly$

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3 years ago

If you could see the electric field coming off a proton you would notice that electric field lines are what?

Readme [11.4K]

The electric field generated by a proton is a radial field, so we would see the field lines going radially from the proton toward every direction. I've attached a picture representing the electric field generated by a positive charge, such as a proton, and we can see the field lines going radially from the charge toward every direction.

3 0

3 years ago

PLZ HELP ME

Alex73 [517]

CRASHES trip sensors in cars that send an electric signal to an ignitor. The heat generated causes sodium azide to decompose into sodium metal and nitrogen gas, which inflates the car's air bags. ... A handful (130 grams) of sodium azide will produce 67 liters of nitrogen gas--which is enough toinflate a normal air bag.

3 0

3 years ago

Read 2 more answers

A 2kg box is pushed along a flat frictionless surface with an applied force of 53.91newton j+19.62 j were j is horizontal and j

tamaranim1 [39]

Since the box doesn't move vertically at all, no work is done by the vertical component of the force.

If 53.91 Newtons is the horizontal component of the force (very unclear in the question), then the work done is

Work = (force) x (distance)

Work = (53.91 N) x (10 m)

Work = 539.1 Joules

Power = (work done) / (time to do the work)

Power = (539.1 joules) / (90 sec)

Power = (539.1/90) (joule/sec)

Power = 5.99 watts

=====================================

Note: If the mass of the box is only 2 kg, and you push it along the surface with a constant force of 53⁺ Newtons, and the surface really is frictionless, then that box is gonna cover a WHOOOOOLE LOT more than 10 meters in 90 seconds. I get 109,168 meters !

5 0

4 years ago

Two identical cylindrical vessels with their bases at the same level each contain a liquid of density 1.23 g/cm3. The area of ea

motikmotik

Explanation:

Work done by gravity is given by the formula,

W = $\rho A (h_{1} - h)g (h - h_{2})$ ......... (1)