Science:Math Exam Resources/Courses/MATH110/December 2014/Question 05 (c)
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Question 05 (c) 

If a rock is thrown upward on the planet Mars with a velocity of 10 m/s, its height (in metres) above the ground level after seconds is given by (c) Sketch a diagram of the rock’s height as a function of time for . 
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If you are stuck, check the hint below. Consider it for a while. Does it give you a new idea on how to approach the problem? If so, try it! 
Hint 

The graph of a quadratic function has the shape of a parabola. 
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Solution 

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Please rate my easiness! It's quick and helps everyone guide their studies. Since represents the height of the rock and from part (a), at , , it starts from , increases first, then decreases, and finally reaches . On the other hand, is a quadratic function, so that it has a parabola shape. Taking into consideration, we obtain the graph of as below 