It measures the capacity of the heart, lungs, and blood to transport oxygen to the working muscles, and measures the utilization of oxygen by the muscles during exercise. I hope I wasn’t too late. Lol

6 0

3 years ago

A rock hits the ground at a speed of 15 m/s and leaves a hole 50 cm deep. After it hits the ground, what is the magnitude of the

garik1379 [7]

Answer:

B) 225 m/s^2

Explanation:

The rock hits the ground at 15m/s and travels 50cm=0.5m through the ground until it stops.

The acceleration is supposed to be uniform, so the formula we have to use is $v^2=v_0^2+2ad$ , which for acceleration is:

$a=\frac{v^2-v_0^2}{2d}$

Taking the <em>downwards direction as positive</em> (the direction of traveling, so the initial velocity and displacement will be positive), substituting our values for that movement we have:

$a=\frac{v^2-v_0^2}{2d}=\frac{(0m/s)^2-(15m/s)^2}{2(0.5m)}=-255m/s^2$

Where the <em>negative sign indicates that it is pointing upwards.</em>

4 0

3 years ago

A force has both______ and _______. Question 3 options: Magnitude & Direction Direction & Motion Speed & Impact Spee

Lemur [1.5K]

Answer:

A force has both Direction and Motion.

Explanation:

For example, when finding acceleration you take the time and divided it by distance. If the thing you are measuring is going in the positive direction, the acceleration will be positive and if it is going in the negative direction the acceleration will be negative.

4 0

3 years ago

Read 2 more answers

Helppppppp mee........

Ket [755]

Answer:

7) 0.0025510294

8) 100

5 0

3 years ago