Question

LINEAR EQUATIONS IN TWO VARIABLES 10. A stone is falling from a mountain. The velocity of the stone is given by 9.8L Draw its graph and find the velocity of the stone 4 seconds after start.
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Answer 1

Answer:

39.2 m/s

Step-by-step explanation:

The velocity of the stone is given by the velocity function

v=9.8tv=9.8t

where v is velocity of the stone after t seconds.

We need to find the velocity of the stone '4' second after start.

Substitute t=4 in the given velocity function.

v=9.8(4)v=9.8(4)

v=39.2v=39.2

Therefore the velocity of the stone '4' second after start is 39.2 m/s.

Step-by-step explanation:

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Answer 2

From the graph (pt. E) we can see that for t = 4, the V = 39.2.