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Juli2301 [7.4K]
2 years ago
7

A=i+j-kb=j+k

TexFormula1" title="a = i + j - k \\ b = j + k" alt="a = i + j - k \\ b = j + k" align="absmiddle" class="latex-formula">
​
Physics
1 answer:
olga nikolaevna [1]2 years ago
4 0

Answer:

¿

Explanation:

.--------------------.

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The slope of a position-time graph can be calculated as:

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3 years ago
A constant friction force of 25 N acts on a 65-kg skier for 15 s on level snow. What is the skier’s change in velocity
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Answer:

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Newton's 2nd Law relates the net force <em>F</em> on an object of mass <em>m </em>with the acceleration <em>a</em> it experiments by <em>F=ma.</em> In our case the net force is the friction force, since it's the only one the skier is experimenting horizontally and the vertical ones cancel out since he's not moving in that direction. Our acceleration then will be:

a=\frac{F}{m}

Also, acceleration is defined by the change of velocity \Delta v in a given time t, so we have:

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