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Vinil7 [7]
2 years ago
7

Please help with 2,3,5 and 6

Physics
1 answer:
Bad White [126]2 years ago
4 0

Auhmm, ms/mr. your question was too blurry

Explanation:

plss can u kinda repost it?

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E = mass x gravity x height
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Starting from rest, a basketball rolls from top of a hill to the bottom, reaching a translational speed of 6.8 m/s. Ignore frict
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Answer:

Explanation:

for baseball

(a) Let the mass of the baseball is m.

radius of baseball is r.

Total kinetic energy of the baseball, T = rotational kinetic energy + translational kinetic energy

T = 0.5 Iω² + 0.5 mv²

Where, I be the moment of inertia and ω be the angular speed.

ω = v/r

T = 0.5 x 2/3 mr² x v²/r² + 0.5 mv²

T = 0.83 mv²

According to the conservation of energy, the total kinetic energy at the bottom is equal to the total potential energy at the top.

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where, h be the height of the top of the hill.

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h = 3.93 m

(b) Let the velocity of juice can is v'.

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T = 0.5 x I x ω² + 0.5 mv²

T = 0.5 x 0.5 x m x r² x v²/r² + 0.5 mv²

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v = 7.2 m/s

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3 years ago
Which is a true statement?
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To increase the acceleration of the car using the same engine, the   mass of the car must be decreased.

<h3>What is Newton's first law of motion</h3>

Newton's first law of motion states that an object at rest or uniform motion in a straight line will continue in that path unless acted upon by an external force.

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Thus, to increase the acceleration of the car using the same engine, the   mass of the car must be decreased.

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Learn more about Newton's law here: brainly.com/question/25545050

#SPJ1

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