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enot [183]
3 years ago
6

What is the average velocity of my bunny rabbit when she hops 6 meters to the

Physics
1 answer:
Dmitry [639]3 years ago
5 0

Answer:

Its velocity is 0.29 m/s due east.

Explanation:

The bunny rabbit covered a total distance of 6 m eastwards during the motion in 21 seconds.

Velocity is define as the ratio of the displacement (distance moved in a specified direction) to the time taken.

velocity = \frac{displacement}{time}

It is a vector quantity, and measured in meters per seconds.

From the given question, displacement = 6 m due east and time = 21 seconds. So that;

velocity = \frac{6}{21}

              = 0.2857

The velocity of the rabbit is approximately 0.29 m/s due east.

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4 years ago
A runner achieves a velocity of 11.1 m/s, 9 sec after he begins. What is his
Elena-2011 [213]

Answer:

1.23 m/s²

Explanation:

Given:

v₀ = 0 m/s

v = 11.1 m/s

t = 9 s

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v = at + v₀

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11.1 m/s = a (9 s) + 0 m/s

a = 1.23 m/s²

The runner's acceleration is 1.23 m/s².

7 0
3 years ago
A wheel in the shape of a flat, heavy, uniform, solid disk is initially at rest at the top of an inclined plane of height 2.00 m
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Answer:

Explanation:

If friction is neglected, the wheel cannot roll and can only slide frictionlessly and will have the same velocity at the bottom of the ramp as if it had been in free fall as it has converted the same amount of potential energy.

mgh = ½mv²

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However if we do not ignore all friction and the wheel rolls without slipping down the slope, the potential energy becomes linear and rotational kinetic energy

mgh = ½mv² + ½Iω²

mgh = ½mv² + ½(½mR²)(v/R)²

2gh = v² + ½v²

2gh = 3v²/2

v = √(4gh/3) =√(4(9.81)(2.00)/3) = 5.11468... = 5.11 m/s

7 0
3 years ago
A car travels 90 meters due north in 15 seconds. Then the car
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A virtual image formed by a concave mirror is always enlarged. O True O False
Dmitry [639]

Answer:

True

Explanation:

A concave mirror produces real and inverted image when object placed at different locations beyond focus of the mirror.

A concave mirror produces virtual and erect and magnified image when an object placed between focus and the pole of the mirror.

8 0
3 years ago
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