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snow_tiger [21]

3 years ago

6

An airplane flies 1,350 miles with a constant speed of 540 mph then it flies another 1,925 miles with a constant speed of 660 mp

h. How much time in total does it take to travel these distances?

1 answer:

Snowcat [4.5K]3 years ago

7 0

Answer:

5.146

Explanation:

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A car enters a level, unbanked semi-circular hairpin turn of 100 m radius at a speed of 28 m/s. The coefficient of friction betw

meriva

Answer:

As 28m/s = 28m/s

Explanation:

r = the radius of the curve

m = the mass of the car

μ = the coefficient of kinetic friction

N = normal reaction

When rounding the curve, the centripetal acceleration is

$a = \frac{v^{2}}{r}$

therefore

$\mu mg = m \frac{v^{2}}{r} \\\\ \mu = \frac{v^{2}}{rg}$

$v = \sqrt{\mu rg}$

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As 28m/s = 28m/s

8 0

3 years ago