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2 years ago

13

What makes a source credible? O It relies on a single original source for facts. OIt is shared by family or a trusted friend. O

It uses personal opinion to support claims. 0 It gives reasons to be believed and trusted

1 answer:

const2013 [10]2 years ago

3 0

Im not sure but it might be the last option: it gives reasons to be believed and trusted

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Which is a heterogeneous mixture?

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3 years ago

What distance does electromagnetic radiation travel in 55.0 μs ?

Komok [63]

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2 years ago

At what height h above the ground does the projectile have a speed of 0.5v?

maw [93]

Answer:

$h=\dfrac{3v^2}{8g}$

Explanation:

It is given that,

Speed of the projectile is 0.5 v. Let h is the height above the ground. Using the first equation of motion to find it.

$v=u+at$

$v=u-gt$

Initial speed of the projectile is v and final speed is 0.5 v.

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$t=\dfrac{v}{2g}$

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$h=vt-\dfrac{1}{2}gt^2$

$h=v\dfrac{v}{2g}-\dfrac{1}{2}g(\dfrac{v}{2g})^2$

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So, the height of the projectile above the ground is $\dfrac{3v^2}{8g}$ . Hence, this is the required solution.

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2 years ago

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3 years ago

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