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3 years ago

Why is measurement important?

Physics

1 answer:

Neko [114]3 years ago

3 0

Answer:

Measurement is important so we could measure certain things right. By taking measurements we can have a knowledge of sizes, lengths, widths etc.

Explanation:

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a model rocket flies horizontally off the edge of a cliff at a velocity of 40.0m/s. if the canyon below is 110.0m deep, how far

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Answer:

189.6 m

Explanation:

First of all, we study the vertical motion of the rocket in order to find the time it takes for it to land. The suvat equation for the vertical motion is

$s=ut+\frac{1}{2}gt^2$

where, taking downward as positive direction:

s = 110.0 m is the vertical displacement

u = 0 is the initial vertical velocity

g = 9.8 m/s^2 is the acceleration of gravity

t is the time of flight

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$t=\sqrt{\frac{2s}{g}}=\sqrt{\frac{2(110)}{9.8}}=4.74 s$

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$v_x = 40.0 m/s$

So the distance travelled horizontall after a time t is

$d=v_x t$

So, when the rocket lands (t = 4.74 s), the horizontal distance travelled is

$d=(40.0)(4.74)=189.6 m$

Therefore, the rocket lands 189.6 m far from the edge of the cliff.

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Why is measurement important?​

Why is measurement important?