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
Lady bird [3.3K]
2 years ago
7

An object, initially at rest, moves 250 m in 17 s. What is its acceleration?

Physics
1 answer:
mash [69]2 years ago
5 0

Answer:

1.73 m/s²

Explanation:

Given:

Δx = 250 m

v₀ = 0 m/s

t = 17 s

Find: a

Δx = v₀ t + ½ at²

250 m = (0 m/s) (17 s) + ½ a (17 s)²

a = 1.73 m/s²

You might be interested in
A block of mass = 4.00 kg is supported by a spring scale with unit of measure of Newtons. This spring scale is attached to top o
faust18 [17]

Answer:

118 N

Explanation:

Given mass of the block, m = 4.00kg.

The acceleration of the elevator, a = 3.0 m/s^2.

As elevotar attaced with spring scale and accelerating upward

(block and elevator), so total force

F_N-mg=ma

Here, mg is the weight of the block downward direction.

or

F_N=ma+mg=m(g+a)

substitute the given value, we get

F_N=4kg(9.8m/s^2+3m/s^2)

     = 117.6 N = 118 N.

Thus, the reading on the spring scale to 3 significant figures is 118 N.

5 0
3 years ago
(WILL MARK BRAINLIEST AND 22pts) As the earth travels around the sun, the sun is always at one focus of an ellipse. What's at th
finlep [7]

Answer:

d. nothing

Explanation:

7 0
3 years ago
Read 2 more answers
A student look at ocean waves coming into the beach. An oceanwavd with more energy will
pshichka [43]
<span>C. Travel toward the beach faster</span>
5 0
3 years ago
Read 2 more answers
What affects fuel consumption in automobiles?
maksim [4K]

Answer:

A and C

Explanation:

drag (the area of lower air pressure behind the car when moving) and mostly air resistance (the work to push the air in front of us away to move through - the faster we go, the stronger the air resists to move aside).

4 0
2 years ago
If a star is moving away from you at a constant speed, how do the wavelengths of the absorption lines change as the star gets fa
Minchanka [31]

Answer:

they stay shifted the same amount to the red

Explanation:

Redshift is given by

z=\dfrac{\lambda_o-\lambda_e}{\lambda_e}

Where,

\lambda_o = Wavelength observed

\lambda_e = Wavelength emitted

Also

Transverse redshift is given by

1+z=\dfrac{1}{\sqrt{1-v^2/c^2}}

v = Velocity of object

c = Speed of light = 3\times 10^8\ m/s

So, if the velocity is constant the redshift remains the same

8 0
3 years ago
Other questions:
  • If an item as a density of.63 g/mL, when placed in water the item will
    8·1 answer
  • A ball is thrown straight up with a launch of 3 m/s.
    12·1 answer
  • The actual yield of a product in a reaction was measured as 4.20 g. If the theoretical yield of the product for the reaction is
    7·2 answers
  • Consider a 10 gram sample of a liquid with specific heat 2 J/gK. By the addition of 400 J, the liquid increases its temperature
    6·1 answer
  • Find the net force of the box and the acceleration. 10 points. Will give brainliest.
    15·1 answer
  • In a hospital setting, which of the following presents the possibility of being the source of an arc flash? A. Electrocautery De
    9·2 answers
  • Please please please please can someone please help me with this. thank you ​
    15·1 answer
  • What is the acceleration of a car that starts from rest and achieves a speed of 45 m/s in 5 seconds?
    15·1 answer
  • A race car starts from rest and accelerates down a track at a rate of 3.0 m/s2
    7·1 answer
  • Two spheres carry a charge of 1x10^-7 C. Their centers are separated by 0.7m. Calculate the magnitude of the force between the t
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!