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Damm [24]
3 years ago
8

A spaceship accelerates from 0 m/s to 60 m/s north in 3 seconds. what is the acceleration of the spaceship?

Physics
2 answers:
Trava [24]3 years ago
7 0
The acceleraton of the spaceship is 20 m/s^2. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
tia_tia [17]3 years ago
6 0

Answer:

acceleration(a) = 20m/s^{2}

Explanation:

Using one of the equations of motion;

<em>v = u + at</em>

where;

<em>v</em> = final velocity of the spaceship

=> v = 60m/s

<em>u </em>= initial velocity of the spaceship

=> u = 0m/s

<em>a</em> = acceleration of the spaceship

<em>t </em> = time taken for the acceleration of the spaceship

=> t = 3 s

Substituting these values into the equation gives;

=> 60 = 0 + a (3)

=> 60 = 3a

Making a the subject of the formula

=> a = \frac{60}{3}

=> a = 20m/s^{2}

Therefore the acceleration of the spaceship is 20m/s^{2}

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A 19-year old soccer player extends their right knee from an initial angle of 20o to 140o in 2 s. If this movement began from re
Mandarinka [93]

Answer: 32π/9 rad/s²

Explanation: initial angular displacement = 20°, final angular displacement = 140°, average time = 2s.

We need to convert the angular displacements to radian.

Recall that 2π = 360°, hence 20° = (20 × 2π)/360 = π/9 rad

Converting 140° to radian we have that

140° = (140 × 2π)/360 = 7π/9

Initial angular displacement = π/9 rad

Final angular displacement = 7π/9

Average angular velocity = change in angular displacement /time

Average angular velocity = 7π /9 - π/9/2

Average angular velocity = (8π/9)/2

Average angular velocity = 16π/9 rad/s

Average angular acceleration = average angular velocity / time taken

Average angular acceleration = (16π/9)/2

Average angular acceleration = 32π/9 rad/s²

4 0
4 years ago
A loudspeaker has a circular opening with a radius of 0.1158 m. The electrical power needed to operate the speaker is 27.0 W. Th
Vilka [71]

Answer:

electrical power is converted by the speaker into sound power 17.25 %

Explanation:

given data

radius = 0.1158 m

power needed = 27.0 W

average sound intensity = 25.6 W/m²

solution

we know sound intensity that is

I = \frac{power}{area}   ...................1

power = intensity × area

Power = 25.6 × 4 ×π×r²

Power = 25.6 × 4 ×π×0.1158²

power = 4.313 W

so here electric power % into sound power

= \frac{4.313}{25} × 100

= 17.25 %

3 0
3 years ago
Do you think the universe has a center
Alika [10]

Answer:

I dont think the universe has a center because there is such a vast majority of stars, planets, and galaxys that havent even been discovered that space could be endless. so no i dont think there is a center to the universe.

Explanation:

5 0
4 years ago
Connor is a basketball player who makes, on average, 65% of her free throws. Asume each shot is independent. SHOW ALL WORK FOR F
baherus [9]

Answer:

DUNNO

Explanation:

BIT BAD FOR 65% WOULD GET -100%

6 0
3 years ago
Ill give Brainliest to who ever answers first
forsale [732]

Answer:

Is there a question?

Explanation:

5 0
3 years ago
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