3 years ago

Psy 325 has anyone had this course

Physics

1 answer:

Pavlova-9 [17]3 years ago

6 0

I do not have that one but i think you can download that in the internet.

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PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST The actual subject is Science but they dont have that as a option in pick

fenix001 [56]

Correct me if I’m wrong but I think it’s A

Explanation:
Runner A has already reached about 50m in around 5s.

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3 years ago

In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 2.8 m/s. However, this speed is inade

erastova [34]

Answer:

3.95979 m/s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

$v^2-u^2=2as\\\Rightarrow as=\frac{v^2-u^2}{2}\\\Rightarrow as=\frac{0^2-2.8^2}{2}\\\Rightarrow as=-3.92$

Here $s=\frac{1}{2}s$

$\\\Rightarrow as=-7.84\ m/s^2$

$v^2-u^2=2as\\\Rightarrow -u^2=2as-v^2\\\Rightarrow u=\sqrt{v^2-2as}\\\Rightarrow u=\sqrt{0^2-2\times -7.84}\\\Rightarrow u=3.95979\ m/s$

Initial velocity of the puck should be 3.95979 m/s

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3 years ago

A box falls out of a stationary helicopter hovering 135 m above the ground. How long will it take to hit the ground?

Marrrta [24]

We have the equation of motion $s = ut + \frac{1}{2} at^2$ , where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.

Here displacement = 135 m, Initial velocity = 0 m/s, acceleration = 9.81 $m/s^2$

Substituting

$135 = 0*t+\frac{1}{2} *9.8*t^2\\ \\ 4.9t^2 =135\\ \\ t =5.25 seconds$

A box falls out of a stationary helicopter hovering 135 m above the ground will take 5.25 seconds to reach the ground.

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3 years ago

Two planets have the same surface gravity, but planet B has twice the mass of planet A. If planet A has mass m, what is the mass

strojnjashka [21]

If B has twice the mass the answer is 2M

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2 years ago

Please help me with this question. Every help is appreciated.

Brilliant_brown [7]

Answer:

Change in KE = +1.96×10^4 J while the change in ME = 0 J

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2 years ago