2 years ago

A stone is dropped from a height of 490 meters. I how many seconds does it hit the ground?

Mathematics

1 answer:

sergij07 [2.7K]2 years ago

3 0

Use this website: https://www.angio.net/personal/climb/speed.html

You might be interested in

0.1629 nearest tenth (0.1) look at the 0.01 place.

topjm [15]

Answer:

If its asking you to round to the nearest tenths place then its 0.2

remember that if the number you're using to round is 5 or higher you add 1. If its 4 or lower it stays the same

6 0

2 years ago

Suppose r(t)=costi+sintj+3tk represents the position of a particle on a helix, where z is the height of the particle above the g

Ilia_Sergeevich [38]

a. The $\vec k$ component tells you the particle's height:

$3t=16\implies t=\dfrac{16}3$

b. The particle's velocity is obtained by differentiating its position function:

$\vec v(t)=\dfrac{\mathrm d\vec r(t)}{\mathrm dt}=-\sin t\,\vec\imath+\cos t\,\vec\jmath+3\,\vec k$

so that its velocity at time $t=\frac{16}3$ is

$\vec v\left(\dfrac{16}3\right)=-\sin\dfrac{16}3\,\vec\imath+\cos\dfrac{16}3\,\vec\jmath+3\,\vec k$

c. The tangent to $\vec r(t)$ at $t=\frac{16}3$ is

$\vec T(t)=\vec r\left(\dfrac{16}3\right)+\vec v\left(\dfrac{16}3\right)t$

4 0

2 years ago

A student ran a distance of 2 1/2 miles each day for 9 days. The student ran a distance of 5 3/4 miles each day for the next 3 d

cestrela7 [59]

Answer:

39.75 miles

Step-by-step explanation:

5 0

2 years ago

A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer of -9. What is the original number? A.

rusak2 [61]

Answer:

The answer is c

Step-by-step explanation:

You have to do everything backwards,

-9 divide it by 3 to get -3, then add seven to that answer

5 0

2 years ago

Read 2 more answers

$132.75 discounted 40%

saw5 [17]

Answer:

$79.65

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers