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nika2105 [10]
3 years ago
10

KINEMATICS: MOTION ALONG STRAIGHT LINE

Physics
1 answer:
Vinil7 [7]3 years ago
6 0

Explanation:

hope this helps, cheers!

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Can sound travel through a tree
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Answer:

not sure but i think yes

Explanation:

sound waves

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You hold a bucket in one hand, and in the bucket is a 500 g rock. You swing the bucket so the rock moves in a vertical circle 2.
Blababa [14]

Answer:

3.28 m/s

Explanation:

From the question,

Applying newtons ,

F = mv²/r........................ Equation 1

Where m = mass of the rock, v = speed, r = radius of the circle, F = Centriputal force.

But,

Centriputal force is equal to the weight of the rock

F = mg................. Equation 2

Equate equation 2 into equation 1

mg = mv²/r

Therefore,

v = √gr...................... Equaion 3

Given: r = 2.2/2 = 1.1 m

Constant: g = 9.8 m/s²

Substitute into equation 3

v = √(9.8×1.1)

v = √(10.78)

v = 3.28 m/s

Hence the minimum speed is 3.28 m/s

5 0
3 years ago
Sally and ner pet puagie go everywnere
FrozenT [24]

a)The total distance she walks will be 1100 m.

b)The magnitude and direction of the budgie's path will be 854.4 m at 69.44°.

c)Sally's average speed for the journey will be 2.82 m/sec

d)The average velocity of Sally's budgie willl be 2.19 m/sec North of East.

<h3>What is displacement?</h3>

Displacement is defined as the shortest distance between the two points.

Distance travelled in north direction,d₁ = 8.0 x 10² m

Time elapsed  travelled in north direction,t₁ = 5.0 minutes

Distance travelled in east direction,d₂ = 0.30 km = 3.0 × 10² m

Time elapsed  travelled in east direction,t₂= 1.5 minutes

The total distance she walks,d =? m

The magnitude and direction of the budgies path will be, D

Sally's average speed for the journey, \rm S_{avg}

The average velocity of Sally's budgie,\rm V_{avg}

a)

The total distance she walks is found as;

d=d₁+d₂

d=800 m +300 m

d = 1100 m

b)

The magnitude and direction of the budgies path will be;

\rm D = \sqrt{d_1 ^2 + d_2^2 } \\\\ D = \sqrt{800^2 +300^2 } \\\\ D = 854.4 \ m

The direction of the displacement is;

\rm   \theta  = tan^{-1} \frac{800}{300} \\\\ \theta = tan^{-1}(2.6) \\\\ \theta = 69.44 ^ 0

c)journey is found as;

Sally's average speed for the

\rm S_{avg}  = \frac{d}{t} \\\\  S_{avg}  =\frac{100}{300+900} \\\\  S_{avg}  =2.82 \ m/sec<em>
</em>

d)

The average velocity of Sally's budgie is found as;

\rm V_{avg}  = \frac{854.4}{300+ 900 } \\\\ V_{avg}  = 2.19 \ m/sec North of east

Hence, the total distance she walks, the magnitude and direction of the budgie's path, Sally's average speed, and the average velocity of Sally's budgie will be 1100 m,854.4 m at 69.44°,2.82 m/sec, and 2.19 m/sec North of East.

To learn more about displacement refer to the link;

brainly.com/question/10919017

#SPJ1

6 0
2 years ago
Because Christopher did not make the basketball team this year, he wants to spend the year building his skills. Which of the fol
storchak [24]
Option A would be the answer :)
3 0
3 years ago
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