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Airida [17]
2 years ago
11

A billiard ball rolls from rest down a smooth ramp that is 8.0 m long. the acceleration of the ball is constant at 2.0?

Physics
1 answer:
Sergeeva-Olga [200]2 years ago
7 0
Sbsbbsbsbsbb jsjshbsbd. Disbanded. En
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What is the relationship between Newton's first law of motion and inertia?​
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Explanation: Newton's first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This is also known as the law of inertia. Inertia is the tendency of an object to remain at rest or remain in motion.

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2 years ago
José and Laurel measured the length of a stick's shadow during the day. Without knowing the length of the stick, which of their
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Option B.

Explanation:

Assuming the stick is in vertical position, its shadow depends on two factors: its length and the angle between the sun rays and the stick. When the angle is bigger, the lenght of the shadow increases, and vice versa. So, when the sun rays are parallel to the stick, the shadow may be small. Since they are nearly perpendicular to the Earth's surface at 12 o'clock, the shadow of the stick at that time should be minimal. It means that the measured shadow of 75 cm at 12:30 p.m. is almost impossible (Option B).

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2 years ago
A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor di
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Answer:

2625 m deep

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Let the sound speed in sea water be 1500 m/s. If he hears the echo 3.5s after the strike, then the sound would have traveled a distance of 1500 * 3.5 = 5250 m to the bottom and back. This would mean the ocean is 5250 / 2 = 2625 m deep.

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3 years ago
The electromagnetic spectrum consists of various ranges of electromagnetic waves. Between which of the following does the visibl
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The answer is D, it falls between the infrared and ultraviolet.
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At the 1 s mark, which objects have equal momentum?
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C. The bowling ball and the bicycle

p = mv
P of bike = 12x5 = 60
P of rock = 2x20 = 40
P of ball = 5 x 10 = 60
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3 years ago
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