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zheka24 [161]
3 years ago
13

Sam is driving along the highway towards Savannah. He travels 150 m in 3 seconds. What is his speed

Physics
1 answer:
Ahat [919]3 years ago
3 0

Answer:

50m/s

Explanation:

Speed = distance/ time

Distance = 150m

Time = 3 secs

Therefore Speed =150/3

Speed = 50 m/s

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3 years ago
Suppose that you measure the length of a spaceship, at rest relative to you, to be 400 m. How long will you measure it to be if
Rashid [163]

Answer:

<em>264 m</em>

<em></em>

Explanation:

The complete question is

Suppose that you measure the length of a spaceship, at rest relative to you, to be 400 m. How long will you measure it to be if it flies past you at a speed of v = 0.75c

using the length contraction relationship,

l = l_{0} \sqrt{1 - \beta ^{2}  }

where \beta = \frac{v}{c}

l is the relativistic length

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c is the speed of light

since v = 0.75c

v/c = 0.75

substituting, we have

l = 400 * \sqrt{1 - 0.75 ^{2}  } = 400 x 0.66 = <em>264 m</em>

5 0
3 years ago
Total these measurements. Your answer should indicate the proper accuracy. Be sure to include the units in your answer. (Remembe
vivado [14]

Answer:

10

Explanation:

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