A bike moves. 50 m in 10 seconds calculate the speed of the bike

Physics

1 answer:

vagabundo [1.1K]3 years ago

5 0

Answer:

We know that

Speed = Distance/ Time

Explanation:

Distance is 50 m
Time is 10 seconds

Speed = 50/10

= 5 m/s

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A man holding a rock sits on a sled that is sliding across a frozen lake (negligible friction) with a speed of 0.480 m/s. The to

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This is a problem of conservation of momentum

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A) man throws the rock forward

=>

rock:
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sled and man:
m2 = 96 kg - 0.310 kg = 95.69 kg
v2 = ?

Conservation of momentum:
momentum before throw = momentum after throw

46.08N*s = 0.310kg*14.5m/s + 95.69kg*v2

=> v2 = [46.08 N*s - 0.310*14.5N*s ] / 95.69 kg = 0.434 m/s

B) man throws the rock backward

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46.08N*s = - 0.310kg*14.5m/s + 95.69kg*v2

v2 = [46.08 N*s + 0.310*14.5 N*s] / 95.69 k = 0.529 m/s

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From the average distance of one of jupiter's moons to jupiter and its orbital period around jupiter, we can determine:

den301095 [7]

Answer: Jupiter's mass

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From Kepler's third law:

$T^2=\frac{4\pi^2}{GM}a^3$

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