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MrRissso [65]
3 years ago
15

What’s the correct answer

Physics
1 answer:
pshichka [43]3 years ago
6 0

Answer:

The equation for momentum is m x v so multiple 5.9 x 5.0

Explanation:

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When a 100-N force acts horizontally on an 8.0-kg chair, the chair moves at a constant speed across the level floor. Which state
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Answer:

The applied force is greater than the frictional force.

Explanation:

the chair moves at <u>a constant speed</u><u> </u><u>therefore</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>not</u><u> </u><u>A</u><u> </u><u>or</u><u> </u><u>C</u><u>.</u>

if there is no friction then the chair <u>would accelerate and it would not be at a constant speed</u><u>.</u>

hence, the only possible answer is B.

7 0
2 years ago
Assuming the ball's initial velocity was 57° above the horizontal and ignoring air resistance, what did the initial speed of the
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Answer:

V0 = 44.97m/s

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Explanation:

The detailed calculation is done as shown in the attachment

7 0
3 years ago
A student wants to use a ramp to move boxes into a truck bed that is 3 m high. He has a choice of 2 different ramps. The length
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Answer:

The correct option is;

B. 8 m, because he has to apply less force over a greater distance

Explanation:

In the given question, in order for the student to lift the boxes onto the tuck with less amount of force, he applies the principle of Mechanical Advantage

The mechanical advantage is given by the measure by which a force is amplified through the use of a tool

Given that the work done = The force × The distance, we have

F₁ × d₁ = F₂ × d₂, which gives;

d₁/d₂ = F₂/F₁

Where;

F₁ = The input force

F₂ = The output force

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d₂ = The output distance

The Mechanical advantage, MA = d₁/d₂ = F₂/F₁

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