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3 years ago

9

If f(x) = 5x - 20 find f(y +2)

1 answer:

olga2289 [7]3 years ago

8 0

Answer:

f(y)=2

Explanation:

5x/5-20/5

x=4

f(y+2)=4

-2 -2

f(y)=2

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Gas pressure in a closed system is caused by _____.

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A 16.0 g bullet is moving to the right with speed 250 m/s when it hits a target and travels an additional 22.6 cm into the targe

bogdanovich [222]

Answer:

The magnitude will be "2212 N".

Explanation:

The given values are:

Initial speed, u = 250 m/s

Final speed, v = 0

Mass, m = 16.0 = 0.016 kg

Distance, d = 22.6 cm

On converting cm into m, we get

d = 0.226 m

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⇒ $v^2-u^2=-2ad$

⇒ $a=\frac{v^2-u^2}{-2d}$

On putting the estimated values, we get

⇒ $=\frac{(0)^2-(250)^2}{-2\times 0.226}$

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3 years ago

A meteor is moving at a speed of 60000 km/h. What is its speed in m/s?

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4 years ago

A Cessna 150 aircraft has a lift-off speed of approximately 125 km/h. What minimum constant acceleration does this require if th

aivan3 [116]

Answer:

Part a)

$a = 3.65 m/s^2$

Part b)

$t = 9.5 s$

Part c)

$v_f = 55.1 m/s$

Explanation:

Part a)

As we know that it starts from rest and moves on runway by total distance 165 m

so we will have

$v_f^2 - v_i^2 = 2ad$

$v_f^2 - 0 = 2(a)(165)$

$v_f = 125 km/h = 34.7 m/s$

now we have

$a = 3.65 m/s^2$

Part b)

Now for take off time we will have

$v_f - v_i = at$

$34.7 - 0 = 3.65 t$

$t = 9.5 s$

Part c)

$v_f = v_i + at$

$v_f = 0 + (3.65)(15.1)$

$v_f = 55.1 m/s$

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3 years ago