Ask question

Ask question

All categories

3 years ago

15

At the end of a race a runner decelerates from a velocity of 8.90 m/s at a rate of 1.70 m/s2. (a) How far in meters does she tra

vel in the next 6.30 s? (Assume the deceleration of 1.70 m/s2 is constant over the full 6.30 s.)

1 answer:

Ad libitum [116K]3 years ago

7 0

Answer:

x=22.33m

Explanation:

Kinematics equation for constant deceleration:

$x =v_{o}*t - 1/2*at^{2}=8.9*6.3-1/2*1.70*6.3^{2}=22.33m$

You might be interested in

A 7.0 kg box is at rest on a table. The static friction coefficient jis between the box and table is 0.40, and

Neko [114]

Answer:

A m 23 3.3 32 m 0.37

Explanation:

So ur still thinking of me Just like I know you should. I cant not give you everything You know I wish I could.

8 0

2 years ago

in the history of astronomy, which of the following is true? a. galileo galilei was a student of tycho brahe. b. johannes kepler

bija089 [108]

C. Ptolemy argued that earth was the center of the universe

7 0

3 years ago

Which one do I press guys?

taurus [48]

Answer:

The Nucleus...

Explanation:

E

8 0

2 years ago

A 10-foot ladder is leaning straight up against a wall when a person begins pulling the base of the ladder away from the wall at

docker41 [41]

Answer:

$y = 4.36$

Explanation:

Let the height of the ladder be L

$L = 10$

Also:

Let $x = distance\ from\ the\ base\ of\ the\ ladder$

Let $y = height\ of\ the\ base\ of\ the\ ladder$

When the ladder leans against the wall, it forms a triangle and the length of the ladder forms the hypotenuse.

So, we have:

$L^2 = x^2 + y^2$ --- Pythagoras Theorem

When the base is 9ft from the wall, this means that:

$x = 9$

Substitute 9 for x and 10 for L in $L^2 = x^2 + y^2$

$10^2 = 9^2 + y^2$

$100 = 81 + y^2$

Make $y^2$ the subject

$y^2 = 100 - 81$

$y^2 = 19$

Make y the subject

$y = \sqrt{19$

$y = 4.36$

<em>Hence, the true distance at that point is approximately 4.36ft</em>

8 0

3 years ago

Proses mendidihnya air.jelaskan!

inn [45]

air akan mendidih pada suhu 100 derajat celcius.air akan selalu pada suhu tersebut,jika lebih dari itu air akan menguap

7 0

2 years ago