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
gayaneshka [121]
3 years ago
14

A skier leaves the horizontal end of a ramp with a velocity of 31.0 m/s and lands 156.3 m from the base of a ramp how high is th

e end of the ramp from the ground ?
Physics
1 answer:
BartSMP [9]3 years ago
3 0

<u>Answer:</u>

The height of ramp = 124.694 m

<u>Explanation:</u>

Using second equation of motion,

s = ut + \frac{1}{2}at^2

From the question,

u = 31 m/s; s = 156.3 m, a=0

substituting values

156.3 = 31\times t + 0

t = \frac{156.3}{31 }

= 5.042 s

Similary, for the case of landing

t = 5.042 s; initial velocity, u =0

acceleration = acceleration due to gravity, g = 9.81 m/s^2

Substituting in h = ut + \frac{1}{2}gt^2

h = 0 + \frac{1}{2} \times 9.81 \times (5.042)^2

h = 124.694 m

So height of ramp = 124.694 m

You might be interested in
If the object represented by the FBD below has a mass of 2.0 kg, what is the
ycow [4]

Answer: B

Explanation:

Let us first resolve the forces.

Horizontal, the vectorial resolution is equal to zero. Since the positive direction and negative direction vector are of same magnitude. Therefore, summation of horizontal forces Fh = 0

Vertical resolution, the sum of forces will be Fv = 30 - 35 = - 5 N

Resultant force F = sqrt( Fv^2 + Fh^2)

Substitutes Fv and Fh. We get

R = sqrt ( 25) = 5N

We are given that the mass M = 2kg

From Newton second law,

F = Ma

Where a = acceleration

Substitute F and M and make a the subject of formula

5 = 2a

a = 5/2 = 2.5 m/s^2

Therefore, acceleration a of the object is 2.5 m/s^2 down.

4 0
3 years ago
What is the power output of an electric motor that lifts a 2.0 kilogram block 15 meters vertically in 6.0 seconds
Hatshy [7]
<span>
power output 
= work done / time
= 2 * 9.81 * 15 / 6
= 49.05W
answer
4.49 W</span>
5 0
2 years ago
Name 3-4 objects you use that depend on the electromagnetic spectrum.
iVinArrow [24]

Answer:

3 objects that depend on the electromagnetic spectrum would be television, radios, and the Microwave. This is due to the fact that radio waves depend on the electromagnetic spectrum and televisions and radios require radio waves. The microwaves also depend on the electromagnetic spectrum in order to make the Mircowave work

Explanation:

7 0
3 years ago
Read 2 more answers
the force of a bag of potatoes on a vegetable stand is 22.5 N down. what is the force of the vegetable stand on the bag of potat
natima [27]

As per Newton's III law we can say that

Force applied by object 1 on object 2 is always equal in magnitude and opposite in direction of the force that object 2 apply on object 1.

So we can say it as

F_{12} = -F_{21}

now here above question is based upon the same

if a bag of vegetables applied a force F = 22.5 N of the surface stand the the same surface will apply same magnitude of force in opposite direction on the vegetables bag

So our answer will be F = 22.5 N (upwards).

4 0
2 years ago
A gas has a volume of 6 L, a temperature of 70 degrees C, and a pressure of 2 atm. If the gas is compressed to a volume of 4 L,
Lelu [443]
I would say check the back of the book
4 0
3 years ago
Other questions:
  • Barycenter can be described as??
    10·1 answer
  • What product of the greenhouse effect could lead to more extreme weather events?
    8·1 answer
  • A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products is cal
    6·2 answers
  • An electron released by a radioactive nucleus that causes a neutron to change into a proton is called
    14·1 answer
  • Rounded to the nearest whole number, how many electrons are in an atom of zirconium? 40 51 91 131
    8·2 answers
  • An older-model car accelerates from 0 to speed v in 9.0 s. A newer, more powerful sports car of the same mass accelerates from 0
    13·1 answer
  • Help me please, MathPhys be my hero :)
    12·1 answer
  • Why are units of measurement useful?
    13·1 answer
  • The plates on a vacuum capacitor have a radius of 3.0 mm and are separated by a distance of 1.5 mm. What is the capacitance of t
    14·1 answer
  • Im bored, start conversation ;)​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!