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shtirl [24]
2 years ago
10

How do I calculate velocity

Physics
1 answer:
Jobisdone [24]2 years ago
5 0

Answer: See photo

Explanation: There are a couple of ways to use velocity in an equation in the photo.

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a car travels from station A to B at 30kmph during its return trip A it travels 30 km pH for the first half distance and it 70 k
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A 42.0-kg parachutist is moving straight downward with a speed of 3.85 m/s. (a) If the parachutist comes to rest with constant a
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Answer:

-414.96 N

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

v^2-u^2=2as\\\Rightarrow a=\frac{v^2-u^2}{2s}\\\Rightarrow a=\frac{0^2-3.85^2}{2\times 0.75}\\\Rightarrow a=-9.88\ m/s^2

F=ma\\\Rightarrow F=42\times -9.88\\\Rightarrow F=-414.96\ N

The force the ground exerts on the parachutist is -414.96 N

If the distance is shorter than 0.75 m then the acceleration will increase causing the force to increase

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