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antoniya [11.8K]
3 years ago
5

How long will it take a ball to roll 10 meters along the floor at a speed of 0.5 m/s?

Physics
1 answer:
IRINA_888 [86]3 years ago
6 0

Answer:

20 seconds.

Explanation:

The following data were obtained from the question:

Distance = 10 m

Speed = 0.5 m/s

Time =...?

The speed of an object is simply defined as the distance travelled by the object per unit time. Mathematically, it is expressed as:

Speed = Distance /time

With the above formula, we can obtain the time taken for the ball to travel a distance of 10 m as shown below:

Distance = 10 m

Speed = 0.5 m/s

Time =...?

Speed = Distance /time

0.5 = 10/time

Cross multiply

0.5 × time = 10

Divide both side by 0.5

Time = 10/0.5

Time = 20 secs.

Therefore, it will take 20 seconds for the ball to travel a distance of 10 m.

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Second question (middle left):
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R1 = V1/I1 = 6/2 = 3 ohms, R2 = 6/1 = 6 ohms, 1/Req = 1/2 + 1/1, Req = 2/3 ohms

Third question (bottom left):
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IT = 3 A, meaning Req = V/It = 12 V/3 A = 4 ohms
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Fourth question (top right):
1/Req = 1/20 + 1/20, Req = 10 ohms
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Parallel circuits, so V1 = V2 = VT = 40 V
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Fifth question (middle right):
1/Req = 1/5 + 1/20 + 1/4, Req = 2 ohms
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V2 = 30V is given, but since these are parallel circuits, V1 = VT = 30 V.
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1/Req = 1/10 + 1/15, Req = 6 ohms
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Answer:

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Applied to this problem, it means that the total initial energy of the spring-toy system must be conserved.

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