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netineya [11]
4 years ago
8

1. A man travels 45 m in 35 seconds. How fast is that? What’s the answer

Physics
1 answer:
Natalija [7]4 years ago
8 0

Answer:

1.28

Explanation:

If you want to find the m/s you would divide distance by time, so

45 divided by 35 would equal 1.28571429 and so on.

you can just write the three first numbers.

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Answer:

1.736m/s²

Explanation:

According to Newton's second law;

\sum F_x = ma_x\\

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The equation becomes;

Fm - Ff = ma_x\\Fm - \mu mg = ma\\

Substitute the given parameters

Fm - \mu mg = ma\\70 - 0.18(20)(9.8) = 20a\\70-35.28 = 20a\\34.72 = 20a\\a = \frac{34.72}{20}\\a =  1.736m/s^2\\

Hence the deceleration rate of the wagon as it is caught is 1.736m/s²

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3 years ago
A rabbit runs 28 m toward the left in 9 s; then the rabbit suddenly changes direction and runs 18 m toward the right in the next
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