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
miss Akunina [59]
3 years ago
13

A bus starts to move from rest. If its velocity becomes 90 km per hour after 8 s, calculate its acceleration. ​

Physics
1 answer:
iren [92.7K]3 years ago
6 0

Answer:

4.05*10^7m/s^2

Explanation:

v1=0

v2=90*1000*3600=324000000

t=8

a= (v1 -v2)/t

P.T.Vs,

a=(0-324000000)/8      90*1000 ,90000*3600

as they r talking about km per hour so kilo is = 1000 and hour=min*sec

1hour-60min and 1min=60sec  so 60*60=3600 so simply we have to multiply 90 with 1000 and then with 3600.formula a=(v1 -v2)/t

a=40500000m/s^2 or

a=4.05*10^7m/s^2

You might be interested in
Which pair of equations can describe the path of a particle moving with an acceleration that is perpendicular to the velocity of
antoniya [11.8K]

Answer:

The question clearly describes the circular motion.

The circular motion equation is

a_{radial} = \frac{v^2}{r}

The path of the particle is circular.

Explanation:

In circular motion, the radial acceleration is always towards the center and constant in magnitude. Furthermore, the velocity of the circular motion is always tangential to the circle, that is it is always perpendicular to the radius, hence the acceleration.

6 0
3 years ago
Why does a green leaf look green in our eyes
mamaluj [8]
They look green because of the “special pair” of chlorophyll molecules.
3 0
3 years ago
Read 2 more answers
A pulley has a mechanical advantage of 1.
sertanlavr [38]

Answer:

There is no mechanical advantage

Explanation:

The mechanical advantage is possible only when the force needed to lift a load is lesser than the weight of the load.

For example, is we have a mechanical advantage of 2, the force needed to lift will be 1/2 of the weight of the load, and if we have a mechanical advantage of 4, the force needed will be 1/4 of the weight of the load.

In the attached image there are clear examples of mechanical advantage with pulleys.

7 0
2 years ago
What are atoms and molecules constantly doing?
Alexus [3.1K]

A. molecules are CONSTANTLY moving.

7 0
3 years ago
Read 2 more answers
A 1200-kilogram automobile in motion strikes a 0.0001-kilogram insect. As a result, the insect is accelerated at a rate of 100 m
nadya68 [22]

Answer:

force = 1 × 10^{-2} N

Explanation:

given data

automobile mass = 1200 kg

insect mass = 0.0001 kg

insect accelerated = 100 m/s²

to find out

magnitude of the force the insect exerts on the car

solution

we get here force the insect exerts that is express as

force = mass × acceleration    ............1

put here value we get

force = 0.0001 × 100 m/s²

force = 1 × 10^{-2} N

6 0
3 years ago
Read 2 more answers
Other questions:
  • A compressed spring has elastic potential energy. Please select the best answer from the choices provided T F
    6·1 answer
  • Calculate the speed of an object that tavels 62.43m in 38.4s
    8·1 answer
  • An element can be identified by its spectrum. True False
    7·2 answers
  • Two cars, A and B , travel in a straight line. The distance of A from the starting point is given as a function of time by xA(t)
    6·1 answer
  • The force that binds atoms together to form molecules is
    10·1 answer
  • Gravitational potential energy is a form of potential energy
    13·1 answer
  • One block rests upon a horizontal surface. A second identical block rests upon the first one. The coefficient of static friction
    8·1 answer
  • Help please fill in the blank
    9·2 answers
  • Which kind of wave interaction is shown?
    7·1 answer
  • How can the pilot determine, for an ILS runway equipped with MALSR, that there may be a penetration of the obstacle identificati
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!