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3 years ago

The changing speed of a car is modeled by the function S() --4t+35, where t is time in seconds. Interpret the model

Mathematics

1 answer:

rosijanka [135]3 years ago

8 0

Answer:

It has the initial speed of 35 unites and it's slowing down by 4 units per second.

Step-by-step explanation:

s(t)=-4t+35

t is time of seconds while the initial means at t=0

s(0)=35 units

It means that the car is slowing down by this rate.

The correct answer is: B.

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Andrew [12]

Answer:

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Step-by-step explanation:

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In physics, if a moving object has a starting position at so, an initial velocity of vo, and a constant acceleration a, the

emmasim [6.3K]

Answer:

$a=\frac{2S -2v_ot-2s_o}{t^2}$

Step-by-step explanation:

We have the equation of the position of the object

$S = \frac{1}{2}at ^2 + v_ot+s_o$

We need to solve the equation for the variable a

$S = \frac{1}{2}at ^2 + v_ot+s_o$

Subtract $s_0$ and $v_0t$ on both sides of the equality

$S -v_ot-s_o = \frac{1}{2}at ^2 + v_ot+s_o - v_ot- s_o$

$S -v_ot-s_o = \frac{1}{2}at ^2$

multiply by 2 on both sides of equality

$2S -2v_ot-2s_o = 2*\frac{1}{2}at ^2$

$2S -2v_ot-2s_o =at ^2$

Divide between $t ^ 2$ on both sides of the equation

$\frac{2S -2v_ot-2s_o}{t^2} =a\frac{t^2}{t^2}$

Finally

$a=\frac{2S -2v_ot-2s_o}{t^2}$

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