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
alexandr402 [8]
3 years ago
11

A sled starts from rest,

Physics
1 answer:
Marrrta [24]3 years ago
5 0

Answer:

25.6 m/s

Explanation:

Draw a free body diagram of the sled.  There are two forces acting on the sled:

Normal force pushing perpendicular to the hill

Weight force pulling straight down

Take sum of the forces parallel to the hill:

∑F = ma

mg sin θ = ma

a = g sin θ

a = (9.8 m/s²) (sin 38.0°)

a = 6.03 m/s²

Given:

v₀ = 0 m/s

a = 6.03 m/s²

t = 4.24 s

Find: v

v = at + v₀

v = (6.03 m/s²) (4.24 s) + (0 m/s)

v = 25.6 m/s

You might be interested in
If hydrogen and helium are the most abundant elements in the unoverse , then why are living organisms composed primarily of carb
Mumz [18]

Answer:

Most of materia isnt life.

Explanation:

The living organisms (life) aren't the most abundant thing in universe.

Hydrogen and helium are present in everywhere, but life isn't.

There is no reason to think because we have a lot of a thing, the life must be made for this thing.

The organic life just can exists because some mysterious properties about carbon, that is the basic foundation of life, carbon is a special element, why? We don't know, actually, it's a huge problem for science discover why the carbon can makes life be possible and other elements can't. But we know is this element that makes life possible.

So, note there isn't relation about the quantity of a material in Universe and the life constituition. In addition, look around, organic materials are very rare in Universe, Earth is one in lots of places and in most of this places there isn't sign of life.

Even in Earth the life looks abundant, in Universe it isn't, the same way in Universe the Hydrogen and Helium are abudant, in Earth isn't soo.

3 0
3 years ago
Doubling an object’s height will have what effect on its potential energy due to gravity?
timurjin [86]
Potential energy due to gravity = Ep = mgh [symbols have their usual meaning ]
Evidently, HALVING the mass will make Ep , HALF its previous value. So, It will be halved.
5 0
3 years ago
Read 2 more answers
Who is considered the father of atomic theory?<br> Rutherford<br> Thomson<br> Dalton<br> Democritus
n200080 [17]
The answer would be dalton
5 0
3 years ago
Read 2 more answers
Which of the following statements is true of space exploration?
elena-s [515]
You don't have a following space exploration
6 0
3 years ago
When you drop a 0.37kg apple earth exerts a force on it that accelerates it at 9.8m/s^2 toward the earths surface. According to
Delvig [45]

force applied due to earth on the apple is given as

F = ma

given that

m = 0.37 kg

a = 9.8 m/s^2

now we have

F = m*a

F = 0.37* 9.8 = 3.63 N

now as per Newton's III law equal and opposite force is applied on earth

so now we can find acceleration of Earth using same equation as we used above

F = ma

here we know that

m = mass of earth

F = 3.63 N

3.63 = 5.98 * 10^{24} * a

a = \frac{3.63}{5.98 * 10^{24}

a = 6.1 * 10^{-25} m/s^2

so acceleration of earth is very small and given by above value

5 0
3 years ago
Other questions:
  • A solid nonconducting sphere of radius R carries a uniform charge density throughout its volume. At a radial distance r1 = R/4 f
    8·1 answer
  • At most, how many bright fringes can be formed on each side of the central bright fringe (not counting the central bright fringe
    6·1 answer
  • How does losing an electron result in a positive charge?
    13·1 answer
  • What is the net force acting on Hector and the toboggan?
    7·1 answer
  • URGENT!
    12·2 answers
  • Which of the following is true about the speed of light?
    9·2 answers
  • A runner is jogging in a straight line at a steady vr= 5 km/hr. When the runner is L= 7.5 km from the finish line, a bird begins
    15·1 answer
  • Changing subscripts is one of the steps of balancing a chemical equation
    14·1 answer
  • Can sound travel through space? Why or why not?
    10·1 answer
  • The graph below shows the percentage of unstable nuclei remaining of a radioactive isotope.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!