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
Mila [183]
4 years ago
10

A car accelerates uniformly in a straight line

Physics
1 answer:
julia-pushkina [17]4 years ago
8 0

The car travels a distance <em>d</em> from rest with acceleration <em>a</em> after time <em>t</em> of

<em>d</em> = 1/2 <em>a</em> <em>t</em>²

It covers 69 m with 2.8 m/s² acceleration, so that

69 m = 1/2 (2.8 m/s²) <em>t</em>²

<em>t</em>² = 2 (69 m) / (2.8 m/s²)

<em>t</em> ≈ 7.02 s

where we take the positive square root because we're talking about time *after* the car begins accelerating.

You might be interested in
Can someone please explain to me in simple terms Einsteins theory of relativity, also known as time dialation?
alexira [117]

Answer:

Time dilation. Time dilation, in the theory of special relativity, the “slowing down” of a clock as determined by an observer who is in relative motion with respect to that clock.The world's most accurate clock has neatly shown how right Albert Einstein was 100 years ago, when he proposed that time is a relative concept and the higher you live above sea level the faster you should age. Einstein's theory of relativity states that time and space are not as constant as everyday life would suggest.The theory of relativity usually encompasses two interrelated theories by Albert Einstein: special relativity and general relativity. Special relativity applies to all physical phenomena in the absence of gravity. General relativity explains the law of gravitation and its relation to other forces of nature.

Explanation:

5 0
3 years ago
An object accelerates.<br><br> • 1st law<br> • 2nd law
sergij07 [2.7K]

Answer:

2nd law

Explanation:

hope it helps...

7 0
3 years ago
Read 2 more answers
Some examples of solar ejections
mylen [45]
Coronal Mass ejections or Solar ejections are activities on the surface of the sun termed to the reaction of the gas composition of the sun's surface attributing to explosion of these gases. One example most commonly known as Solar Flares, and another example is termed as erupting prominence.
8 0
4 years ago
Which of the following is a source of thermal energy that is absorbed by Earth's atmosphere?
Mazyrski [523]

Answer:

100% of the energy entering earth's atmosphere comes from the sun. ~50% of the incoming energy is absorbed by the earth's surface i.e. the land and oceans.

8 0
3 years ago
A snail is traveling from garden a to garden b which are 2 meters apart. It takes 4 hours for the snail to make it to garden b.
lys-0071 [83]

The snail was going at 0.5

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which planet is the farthest terrestrial planet from the Sun?
    14·1 answer
  • A 5 kg ball is traveling at the same speed as a 10 kg ball. Compared with the 5 kg ball, the 10 kg ball has
    10·2 answers
  • A 1250 kg car is stopped at a traffic light. A 3550 kg truck moving at 8.33 m/s hits the car from behind If bumpers lock,how fas
    6·1 answer
  • Cleo stated that light travels through air in straight paths, and when it moves from air to water, light changes direction, spee
    14·1 answer
  • 6. Total current in a parallel circuit is equal to ?
    10·1 answer
  • . A 1.00 kg rock is thrown up into the air from ground level at a speed of 8.00 m/s. The ball travels up
    9·1 answer
  • How to find the mechanical advantage
    10·2 answers
  • An object of mass m moving at a speed of v1 possesses kinetic energy that is equal to KE1. When the object's speed is doubled, t
    8·1 answer
  • SOMEONE HELP PLEASE :)What types of forces might be involved in Transform Boundaries?
    5·1 answer
  • In your egg drop you want to decrease.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!