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
Bezzdna [24]
2 years ago
12

A car slows from 22m/s to 3.0m/a at a constant rate of 2.1m/s. How many seconds are required before the car is traveling at 3.0m

/s?
Physics
1 answer:
lilavasa [31]2 years ago
8 0

Answer:

t = 9.05 s

Explanation:

Given,

The initial velocity of the car, u = 22 m/s

The final velocity of the car, v = 3.0 m/s

The rate of change of speed of the car is 2.1 m/s,

                                      ∴ the acceleration, a = -2.1 m/s²

The acceleration and velocity is given by the relation

                                           a = (v - u)/t     m/s²

Therefore,

                                           t = (v-u)/a  s

Substituting the values in the above equation

                                          t = (3.0 - 22)/(-2.1)

                                            = 9.05 s

Hence, the time required before the car is traveling at 3.0m/s is t = 9.05 s

You might be interested in
A car which is traveling at a velocity of 15 m/s undergoes an acceleration of 6.5 m/s2 over a distance of 340 m. How fast is it
fomenos

Answer:68.15m/s

Explanation:

<u><em>Given: </em></u>

v₁=15m/s

a=6.5m/s²

v₁=?

x=340m

<u><em>Formula:</em></u>

v₁²=v₁²+2a (x)

<u>Set up:</u>

=\sqrt{15m/s} ^{2} +2(6.5m/s^2)(340m)

<h2><u><em>Solution:</em></u></h2><h2><u><em>68.15m/s</em></u></h2>

<u />

6 0
3 years ago
What the charges of the nucleus
saw5 [17]
Protons are positive, electrons are negative, and neutrons are neutral. In the nucleus, there are protons and neutrons, so the charge of a nucleus is positive.
4 0
3 years ago
In the academic year of 2012-2013, how many student athletes had some or all of their education paid for?
klio [65]

Answer:1,000,000 Kids

Explanation:Dragon

6 0
2 years ago
Energy produced by nuclear fusion is ?
pentagon [3]
<h3><u>Answer;</u></h3>

<em>D. Produces no wastes</em>

<h3><u>Explanation;</u></h3>
  • <em><u>Nuclear fusion are nuclear reactions in which two or more atomic nuclei fuse or join to generate different atomic nuclei together with subatomic particles, such as protons or neutrons. </u></em>
  • Additionally,<em><u> nuclear fusion reactions yields lots energy.</u></em> The energy produced is usually more than the energy consumed by the reaction.
  • <em><u>Fusion power  is a form of power generation in which energy generated using fusion reactions is used to produce heat that is used in generation of electricity.</u></em> Energy from nuclear fusion reactions is not coupled by production of wastes.
4 0
3 years ago
Read 2 more answers
When you use the front brakes on your bicycle, why does your body want to rotate over the front wheel
stiv31 [10]

Answer:

Because the bike is slowing down at a faster rate than you are.

Explanation:

An object in motion will stay in motion.  The bike is slowing down faster than the passenger.  The bike will slow the rider down because the rider is hanging on but you will feel the force when the bike is breaking.

Newton's first law of motion - sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

5 0
2 years ago
Other questions:
  • A python can detect thermal radiation from objects that differ in temperature from their environment as long as the received int
    15·1 answer
  • A force is applied to the rim of a disk that can rotate like a merry-go-round, so as to change its angular velocity. Its initial
    14·1 answer
  • A stone is thrown horizontally at a velocity of 12.38 m/s from a tree house that is
    9·1 answer
  • Explain how changes in weather are caused by the interaction of air masses
    6·1 answer
  • What is the name of alfred wegener's hypothesis about moving land masses?
    12·2 answers
  • A researcher plans to conduct a study to compare two groups. Based on previous research, she anticipates a medium effect size. S
    8·1 answer
  • Hunk travelled 540 km at an average speed of 90 km/h. If Tim completed the same amount of distance with 1 hour and 30 min less t
    9·1 answer
  • By the end of the 19th century, more than half of the population believed in the presence of atoms.
    14·1 answer
  • A hand-crank generator inputs 160 Joules of energy into a light bulb over the course of 2.5 seconds. Calculate the power
    13·1 answer
  • 10 kg mass sliding along a horizontal rough surface at speed 30 m/s and rests in 6 seconds. what is the coefficient of friction
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!