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3 years ago

An object has traveled 20 meters in 40 seconds what is its average speed

Physics

1 answer:

Mice21 [21]3 years ago

6 0

Hello,

To solve we need to know the formula for speed

The formula is D/T=S (Distance of time=speed)

Now all we have to do is plug in the numbers.

20/40= 1/2 or 0.5

SO the speed is 0.5 m/s

Have a great day!

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2 years ago

A glass rod and a steel rod are of equal length at 0C. At 100C they differ in length by

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Read 2 more answers

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This question can be solved by using the equations of motion.

a) The initial speed of the arrow is was "9.81 m/s".

b) It took the arrow "1.13 s" to reach a height of 17.5 m.

We will use the second equation of motion to find out the initial speed of the arrow.

$h= v_it + \frac{1}{2}gt^2\\$

where,

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t = time interval = 2 s

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Therefore,

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To find the time taken by the arrow to reach 17.5 m, we will use the second equation of motion again.

$h= v_it + \frac{1}{2}gt^2\\$

where,

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h = height = 17.5 m

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solving this quadratic equation using the quadratic formula, we get:

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Since time can not have a negative value.

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