3 years ago

To discover the laws of reflection it is necessary to use a ... 1 point

Physics

1 answer:

tamaranim1 [39]3 years ago

5 0

Isn’t it a light box , mirror and / or angle measurer?

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Cindy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next 1,000 meters, 1 minu

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Answer:

200 m / min

Explanation:

Total distance = 2000 m

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Average speed = 2000 m / 10 min = 200 m/min

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If you are sitting in a bus that is traveling along a straight, level road at 100 km/hr., you are traveling at 100 km/hr too. (a

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3 years ago

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vesna_86 [32]

Answer: 4550 Joules

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3 years ago

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Hope it cleared your doubt.

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3 years ago

A foot player runs 1.6m/s and has a KE of 790 J. What is his mass?

Mariana [72]

The equation for kinetic energy is,

Ke = (1/2)mv^2.

You're given a kinetic energy of 790 joules, and a speed of 1.6 m/s. Plugging these values into the equation, we get,

790 = (1/2)(1.6)^2(m).

Solving for m, we get,

m = (790)/(0.5(1.6)^2).

I'll let you crunch out those numbers for yourself :D

If you have any questions, feel free to ask. Hope this helps!

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3 years ago