1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vampirchik [111]
2 years ago
10

A ski hill is angled 20° above the horizontal. If a skier starts from rest at the top of the hill, how fast will she be travelin

g after she has traveled 62 m 62 ⁢ m down the slope? Assume that friction is negligible.
Physics
1 answer:
MaRussiya [10]2 years ago
6 0

Answer:

20 m/s

Explanation:

First, we calculate for the acceleration down the incline using a = gsin\theta.

a = (9.80)sin(20°)

a = 3.35

Then, we use one of the kinematics equations, {v_{f}}^{2} = {v_{i}}^{2} + 2 a\Delta s.

v_{i} = 0 m/s

a = 3.35

\Delta s = 62 m

v_{f} = \sqrt{2(3.35)(62)}

v_{f} =20.381 = 20 m/s

You might be interested in
Which of the following describes how the mechanical advantage of a simple machine affects the amount of force needed for work? A
Simora [160]

Answer:

The answer is a

Explanation:

5 0
2 years ago
Mendeleev arranged the known chemical elements in a table according to increasing
sladkih [1.3K]
1- mass 2. 3 3. Li2O 4. Of the strong attraction..................
8 0
2 years ago
Read 2 more answers
A spaceship enters the solar system moving toward the Sun at a constant speed relative to the Sun. By its own clock, the time el
klasskru [66]
B is the answer to this
3 0
3 years ago
Describe two possibilities of what will happen to the universe in the future.
shutvik [7]
In our current view of the Universe there are 2 possible futures. One possiblity is that the Universe will come to an end in the opposite of a Big Bang called The Big Crunch. The other possibility is that we live in an Eternal Universe that will never come to end.

i hope this helps :)
4 0
3 years ago
Two boxes on opposite ends of a massless board that is 3.0 m long. The board is supported in the middle by a fulcrum. The box on
rosijanka [135]

Answer:

b. 1.1 m

Explanation:

It is given that the total distance between the masses is equal to the length of the board, which is 3 m. Therefore,

s_{1} + s_{2} = 3\ m\\\\s_{2} = 3\ m - s_{1}\ --------- eqn(1)

where,

s₁ = distance of fulcrum from left mass

s₂ = distance of fulcrum from right mass

In order to achieve balance, the torque due to both masses must be equal:

T_{1} = T_{2}\\m_{1}s_{1} = m_{2}s_{2}\\(25\ kg)(s_{1}) = (15\ kg)(s_{2})\\\\\frac{15\ kg}{25\ kg}(s_{2}) = s_{1}\\\\using\ eqn(1):\\(0.6)(3\ m - s_{1}) = s_{1}\\1.8\ m = 1.6\ s_{1}\\s_{1} = \frac{1.8\ m}{1.6}

s₁ = 1.1 m

Hence, the correct option is:

<u>b. 1.1 m</u>

4 0
2 years ago
Other questions:
  • If two protons and two neutrons are added to the nucleus of a carbon atom, what nucleus does it become?
    7·2 answers
  • What do telescopes detect that assists astronomers making discoveries in space
    14·1 answer
  • Given that the velocity of blood pumping through the aorta is about 30 cm/s, what is the total current of the blood passing thro
    8·1 answer
  • A conducting sphere contains positive charge distributed uniformly over its surface. Which statements about the potential due to
    6·1 answer
  • Suppose you pull two opposite sides of the loop away from each other, such that the other two sides get closer, reducing the loo
    15·1 answer
  • What other theory does the author compare to the Big Bang to?
    6·1 answer
  • 1. A body whose mass is 2 kg and has a volume of 500cm just floats
    12·1 answer
  • Describe an example of acceleration and explain how velocity is changing.
    14·2 answers
  • What is the velocity of a cheetah that sprints 100 meters west in 4 seconds?​
    13·1 answer
  • How many milliliters are in 1 liter?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!