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Anna [14]
3 years ago
11

Memories

Physics
1 answer:
nevsk [136]3 years ago
7 0

Answer:

Its ok but the answer is C

Explanation:

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Both a molten metallic core and reasonably fast rotation.
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As an object accelerates to a speed close to the speed of light, which of the following stays the same?
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What is the equivalent resistance of a circuit that contains two 50.00
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A car moving in a straight line starts at X=0 at t=0. It passesthe point x=25.0 m with a speed of 11.0 m/s at t=3.0 s. It passes
Agata [3.3K]

Answer:

Average velocity v = 21.18 m/s

Average acceleration a = 2 m/s^2

Explanation:

Average speed equals the total distance travelled divided by the total time taken.

Average speed v = ∆x/∆t = (x2-x1)/(t2-t1)

Average acceleration equals the change in velocity divided by change in time.

Average acceleration a = ∆v/∆t = (v2-v1)/(t2-t1)

Where;

v1 and v2 are velocities at time t1 and t2 respectively.

And x1 and x2 are positions at time t1 and t2 respectively.

Given;

t1 = 3.0s

t2 = 20.0s

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v2 = 45 m/s

x1 = 25 m

x2 = 385 m

Substituting the values;

Average speed v = ∆x/∆t = (x2-x1)/(t2-t1)

v = (385-25)/(20-3)

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a = (45-11)/(20-3)

a = 2 m/s^2

8 0
3 years ago
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