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3 years ago

Which example identifies a change in motion that produces acceleration?

2 answers:

6 0

Acceleration is the rate at which an object changes its velocity. It defines how much the velocity is changing. The acceleration can be negative and positive. Negative acceleration is when the object slows down, while positive while the object goes faster.
<span>A ball moving at a constant speed around a circular track produces acceleration. </span>

k0ka [10]3 years ago

5 0

A ball moving at a constant speed around a circular track produces acceleration.

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The formula used to find force is F=m*v.<br> true or false

zepelin [54]

It's true IF ' m ' stands for mass and ' v ' stands for acceleration. Otherwise it's false.

4 0

2 years ago

Work done on a body depends on the magnitude of the force,

liberstina [14]

What’s the question?

4 0

3 years ago

How much work would a child do while puling a 12-kg wagon a distance of 3m with a 22 N force directed 30 degrees with respect to

Alika [10]

Answer:

The work done will be 57.15 J

Explanation:

Given that,

Mass = 12 kg

Distance = 3 m

Force = 22 N

Angle = 30°

We need to calculate the work done

The work done is defined as,

$W = Fd\cos\theta$

Where, F = force

d = displacement

Put the value into the formula

$W=22\times3\times\cos30^{\circ}$

$W=22\times3\times\dfrac{\sqrt{3}}{2}$

$W = 57.15\ J$

Hence, The work done will be 57.15 J

6 0

3 years ago

Consider the video tutorial you just watched. suppose that we repeat the experiment, but this time we replace the original 56-g

Gwar [14]

Answer:

Fm - W = 0 1) true. Imams must separate, to match the two forces, you reach equilibrium

Explanation:

When the magnet is exchanged for a stronger one, but of the same weight, the equilibrium equation

Fm - W = 0

Fm = W

If the weight of the imam is the same, the magnetite force must decrease, so that it will occupy the magnets must be separated a greater distance, according to the formula

Fm = Km m ’m / r²

Where Km is value 10⁻⁷ N s²/C², r is the distance between the poles

Let's review the proposed results

1) true. Imams must separate, to match the two forces, you reach equilibrium

2) False. In this case the weight would be less than the magnetic force

3) False The magnetic force increases and equilibrium is not reached

8 0

3 years ago

What type of front occurs when cold air and warm air are next to each other, but are at a standstill?

Natasha_Volkova [10]

It is B stationary front
sorry if i'm late

6 0

3 years ago