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enyata [817]
3 years ago
8

A rock falls from rest off a high cliff. How much time does it take for the rock to reach a speed of 40 m/s? [ignore air resista

nce.]
Physics
1 answer:
grigory [225]3 years ago
3 0

Answer:THERE

Explanation:

10,M/S.

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A van travels 24 km with a constant speed of 65 km/h and another 50 km with a constant speed of 80 km/h. How long did it take fo
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During an auto accident, the vehicle’s air bags deploy and slow down the passengers more gently than if they had hit the windshi
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Answer:

d = 0.38 m

Explanation:

As we know that the person due to the airbag action, comes to a complete stop, in 36 msec or less, and during this time, is decelerated at a constant rate of 60 g, we can find the initial velocity (when airbag starts to work), as follows:

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v₀ = a*t = 60*9.8 m/s²*36*10⁻³s = 21.2 m/s

With the values of v₀, a and t, we can find Δx, applying any kinematic equation that relates all of some of these parameters with the displacement.

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vf^{2} -vo^{2} = 2*a*d

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5 0
3 years ago
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What does an object in equilibrium has a net force of .
Vlad1618 [11]
From our studies of the work of Professor Newton,
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The SI unit of mass is kilogram (kg)....

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