The required force to push the box straight up at a constant speed is zero.
<h3>Net force on the box at constant speed</h3>
The net force on the box is calculated by applying Newton's second law of motion as follows;
∑F = 0
F - Ff = ma
<em>(at constant speed, acceleration is zero)</em>
Thus, the required force to push the box straight up at a constant speed is zero.
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B It’s a physical change because the water and the salt kept their original properties.</span>
Explanation:
Let
= distance traveled while accelerating
= distance traveled while decelerating
The distance traveled while accelerating is given by
We need the velocity of the rocket after 30 seconds and we can calculate it as follows:
This will be the initial velocity when start calculating for the distance it traveled while decelerating.
Solving for we get
Therefore, the total distance x is
Answer:
y < 272
Explanation:
first turn 1/8 into a decimal which is 0.125 then devide 34 by 0.125 which is 272, meaning y is less than 272
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