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3 years ago

What is the advantage of a free market economy??

1 answer:

5 0

A free market economy<span> has two key </span>advantages<span>. First, it allows for individuals to innovate. Individuals have the freedom to create new ideas, new products, and new services to sell for profit. They are not required to only produce what the government tells them to produce.</span>

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A car accelerates while trying to merge onto the freeway. Its speed goes from 0 km/h to 70km/h in 10 seconds. What is its accele

atroni [7]

Answer:

1.944m_s²

Explanation:

First convert speed from km/h to m/s the use the formula a=v-u

8 0

3 years ago

Two cars leave towns 800 kilometers apart at the same time and travel toward each other. One car's rate is 18 kilometers per hou

vivado [14]

Answer:

speed of slower car is 71 km/h

Explanation:

The distance between two cars is given as

$d = 800 km$

time taken by two cars to meet is given as

$t = 5 hours$

now the relative speed of two cars is given as

$v_{rel} = \frac{d}{t}$

$v_1 + v_2 = \frac{800}{5} = 160 km/h$

also it is given that the difference of speed of two cars is

$v_1 - v_2 = 18 km/h$

now from above two equations we have

$v_1 = 89 km/h$

$v_2 = 71 km/h$

7 0

3 years ago

A lead ball is dropped into a lake from a diving board 5.0 meters above the water. After entering the water, it sinks to the bot

xxMikexx [17]

Answer:

28.8 meters

Explanation:

We must first determine at which velocity the ball hits the water. To do so we will:

1) Assume no air resistance.

2) Use the Law of conservation of mechanical energy: E=K+P

Where

E is the mechanical energy (which is constant)

K is the kinetic energy.

P is the potential energy.

With this we have $\frac{m}{2} *v^{2} = m*g*h$

Where:

m is the balls's mass <- we will see that it cancels out and as such we don't need to know it.

v is the speed when it hits the water.

g is the gravitational constant (we will assume g=9.8 $\frac{m}{s^{2} }$ .

h is the height from which the ball fell.

Because when we initially drop the ball, all its energy is potential (and $P = - m*g*h$ ) and when it hits the water, all its energy is kinetic ( $K=\frac{m}{2} *v^{2}$ . And all that potential was converted to kinetic energy.