PHYSICS HIGH SCHOOL

An object is thrown downward with an initial velocity of 3 feet per second. The relationship between the distance s it travels and time t is given by s = 3t + 16t2. How long does it take the object to fall 70 feet?

Answers

Answer 1

Answer:

Answer:2 s

Explanation:

Given

initial velocity $u=3 ft/s$

distance travel $s=3t+16t^2$

time taken to travel 70 feet

$70=3t+16t^2$

$16t^2+3t-70=0$

using $x=(-b\pm √(b^2-4ac))/(2a)$ to get roots

$t=(-3\pm √(3^2-4(16)(-70)))/(2\cdot 2)$

t=2 and -2.19

only feasible time is 2 s

thus it requires 2 s to cover 70 feet

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Answers

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3. Reading the graph, we find the velocity is 8 m/s at t-2 s and 16 m/s at t-4 s. Based on this information,what is the acceleration?

Answers

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Answers

a non example of distance is capacity , volume , temperature , time , weight , power , velocity , energy , pressure , and angle

Final answer:

A nonexample of distance refers to statements or information that do not provide quantitative information about the length between two points.

Explanation:

A nonexample of distance would be something that does not involve measuring the length between two points. For example, when talking about the distance between two cities, saying 'I like the weather there' would be a nonexample because it does not provide any quantitative information about the distance. Similarly, if we are measuring the distance a car travels, saying 'It is a red car' would also be a nonexample as it does not relate to the measurement of distance.

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Answers

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Answers

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Answers

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Explanation:

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