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3 years ago

The law of inertia applies to

Physics

2 answers:

navik [9.2K]3 years ago

6 0

C) both moving and non-moving objects
As, it is same as the Newton's first law motion

EleoNora [17]3 years ago

6 0

I believe the answer is C. both moving and nonmoving objects.

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In the figure below (Figure 1), the upper ball is released from rest, collides with the stationary lower ball, and sticks to it.

Georgia [21]

(a) The frequency of the motion after the collision is 0.71 Hz.

(b) The maximum angular displacement of the motion after the collision is 16.3⁰.

<h3>Speed of the 2.2 kg ball when it collides with 2.7 kg ball</h3>

The speed of the 2.2 kg ball which was initially 10 cm higher that 2.7 kg ball is calculated as follows;

K.E = P.E

¹/₂mv² = mgh

v² = 2gh

v = √2gh

v = √(2 x 9.8 x 0.1)

v = 1.4 m/s

<h3>Final speed of both balls after collision</h3>

The final speed of both balls after the collision is determined from the principle of conservation of linear momentum.

Pi = Pf

m₁v₁ + m₂v₂ = vf(m₁ + m₂)

2.2(1.4) + 2.7(0) = vf(2.2 + 2.7)

3.08 = 4.9vf

vf = 3.08/4.9

vf = 0.63 m/s

<h3>Maximum displacement of the balls after the collision</h3>

P.E = K.E

$mgh_f = \frac{1}{2} mv_f^2\\\\h_f = \frac{v_f^2}{2g} \\\\h_f = \frac{(0.63)^2}{2(9.8)} \\\\h_f = 0.02 \ m$

<h3>Maximum angular displacement</h3>

The maximum angular displacement of the balls after the collision is calculated as follows;

$cos \theta = \frac{L - h_f}{L} \\\\cos\theta = \frac{0.5 - 0.02}{0.5} \\\\cos\theta = 0.96\\\\\theta = cos^{-1}(0.96)\\\\\theta = 16.3 \ ^0$

<h3>Frequency of the motion</h3>

$f = \frac{1}{2\pi} \sqrt{\frac{g}{L} } \\\\f = \frac{1}{2\pi } \sqrt{\frac{9.8}{0.5} } \\\\f = 0.71 \ Hz$

Learn more about maximum angular displacement here: brainly.com/question/13665036

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2 years ago

If Becky expects to lose 20 pounds in 2 weeks, she has _____.

denpristay [2]

She needs to lose an average of 10 pounds per week in order to fulfill her expectation. Go Becky !

8 0

3 years ago

Read 2 more answers

What is long straight tube that moves food by persistalsis to stomach

Katyanochek1 [597]

Esophagus.

The esophagus is a long straight tube about 10 inches long that arises from the pharynx, passes through the diaphragm and continues into the stomach. The muscular walls of the esophagus move food into the stomach by peristalsis.

3 0

3 years ago

A 29.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 25.0° with the vertica

KiRa [710]

Answer:

v = 2.348 m/s

Explanation:

Let:

h be the height of the child above the swing's low point,

v be the speed at the low point.

When the ropes make angle 3

25 deg. with the vertical:

h = 3.00(1 - cos(25)).

Equating potential energy at the high point to kinetic energy at the low point:

29.0 * 9.81 * 3.00(1 - cos(25)) = 29.0v^2 / 2

79.96 =29.0v^2 / 2

v = 2.348 m/s

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3 years ago

Draw arrows to show how the forces of thrust,drag,and Gravity act on a racing car as it moves forward

lisov135 [29]

2 images attatched below
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/

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3 years ago