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
Katena32 [7]
3 years ago
6

A skateboarder jumps horizontally off the top of a staircase and lands at bottom of the stairs. The staircase has a horizontal l

ength of 12.0 m, and the jump lasts 1.10s. We can ignore air resistance. What is the skater's vertical velocity upon landing? Round your answer to three significant digits.
Physics
1 answer:
e-lub [12.9K]3 years ago
3 0

Answer:

The vertical velocity of the skater upon landing is 10.788 meters per second.

Explanation:

Skateboarder experiments a parabolic movement. As skateboarder jumps horizontally off the top of the staircase, it means that vertical component of initial velocity is zero and accelerates by gravity, the final vertical speed is calculated by the following expression:

v = v_{o} + g\cdot t

Where:

v_{o} - Initial vertical speed, measured in meters per second.

v - Final vertical speed, measured in meters per second.

g - Gravitational acceleration, measured in meters per square second.

t - Time, measured in seconds.

Given that v_{o} = 0\,\frac{m}{s}, g = -9.807\,\frac{m}{s^{2}} and t = 1.10\,s, the final velocity of the skater upon landing is:

v = 0\,\frac{m}{s} + \left(-9.807\,\frac{m}{s^{2}} \right)\cdot (1.10\,s)

v = -10.788\,\frac{m}{s}

The vertical velocity of the skater upon landing is 10.788 meters per second.

You might be interested in
The image shows a dam.
mixer [17]

Answer:

x kinetic Energy..

......I hope

4 0
2 years ago
Read 2 more answers
A sound with an intensity greater than_____ dB can cause damage to human ears.
sergiy2304 [10]

85 decibels or higher can cause damage to the human ear. Decibels is the value of the measurement of sound. Hearing loss can be caused by noise coming from a loud sound. Noise induced hearing loss maybe permanent loss or temporary loss. Examples of activities that can give you a noise induced hearing loss is target shooting, listening to music in your earphones that have a high volume, and using lawnmowers. 

5 0
3 years ago
Question 20 Unsaved The graph below represents changes in water. What process is occurring during section "B" of the graph? Ques
FinnZ [79.3K]

melting ... happpens at constant temp

4 0
2 years ago
Read 2 more answers
Determine the value of the information in scientific notation. The moon is approximately 3. 63 × 108 meters from Earth. What is
Usimov [2.4K]

Answer:

d

Explanation:

7 0
2 years ago
Hello please help i’ll give brainliest
ser-zykov [4K]

The correct answer is B.Antartica and Australia were one landmass millions of years ago.

5 0
3 years ago
Other questions:
  • On a hot day, you sit on the edge of a pool and dip your feet into the water, causing changes to occur that are related to the p
    11·1 answer
  • If the light strikes the plastic (from the water) at an angle θw, at what angle θa does it emerge from the plastic (into the air
    6·2 answers
  • Which of the following is the best description of the term resultant displacement
    11·1 answer
  • Describe the path of the electric current through a circuit?​
    10·1 answer
  • A reaction in which small nuclei combine to form a heavier nucleus is called ____. a. fission c. background radiation b. a chemi
    14·1 answer
  • You are cooking breakfast for yourself and a friend using a 1,140-W waffle iron and a 510-W coffeepot. Usually, you operate thes
    15·1 answer
  • Nombrar y explicar cada una de las Leyes de Newton
    5·1 answer
  • In the properties of matter case study lab how did the criminals make the coins look gold
    15·1 answer
  • Good Luck! And Happy Weekend!
    5·1 answer
  • I need help with this question, could you help me? :))) ASAP
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!