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DedPeter [7]
3 years ago
11

:”)

Physics
1 answer:
ludmilkaskok [199]3 years ago
3 0

Answer:

Explanation:

1)  average velocity is

v = (21 + 39)/2 = 30m m/s

d = vt 30(4.1) = 123 = 120 m

2)  d = ½gt²

d = ½(9.8)(4.1²)

d = 82.369 = 82 m

when rounding to the two significant digits of the question numerals.

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