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Aleonysh [2.5K]

3 years ago

10

Pllzzzz help I will mark u as a brainliest

1 answer:

Law Incorporation [45]3 years ago

8 0

Answer:

You dont need BRAINLY there is an app called slader where you scan the textbook barcode and it shows you the answers for the question in the textbook.

Explanation:

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11) A sled is initially given a shove up a frictionless 35º incline. It reaches a maximum height of 2.5

Andrej [43]

Answer:

7 m/s

Explanation:

To solve this problem you must use the conservation of energy.

$K1 +U1=K2+U2$

That math speak for, initial kinetic energy plus initial potential energy equals final kinetic energy plus final potential energy.

The initial PE (potential energy) is 0 because it hasn't been raised in the air yet. The final KE (kinetic energy) is 0 because it isn't moving. This gives the following:

$KE1= \frac{1}{2}mv^{2}}$

$PE2=mgh$

K1=U2

$\frac{1}{2} mv^{2} =mgh$

Solve for v

$v=\sqrt{2gh}$

Input known values and you get 7 m/s.

5 0

2 years ago

Types of media that can influence one's social development include all of the following except

dybincka [34]

A. movies b. internet c. books

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2 years ago

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A measurement must include both a number and a(an)

IrinaK [193]

<span>A measurement must include both a number and an unit of measurement. </span>

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2 years ago

A hammer of mass M is moving at speed v0 when it strikes a nail of negligible mass that is stuck in a wooden block. The hammer i

OleMash [197]

Answer:

i think it would be D

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2 years ago

In order to do work, the force vector must be

gregori [183]

As we know that total work done by a force is given by

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$W = Fdcos\theta$

so it is product of force and displacement along same direction

as we can write it as

$W = (Fcos\theta)(d)$

so it must be the product of force and displacement in same directions so correct answer must be

<u>B. in the same direction as the displacement vector and the motion.</u>

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2 years ago

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