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
solong [7]
4 years ago
9

Calculate the acceleration of a bus that goes

Physics
1 answer:
Svet_ta [14]4 years ago
4 0

The acceleration of the bus is 1.11 meters per second square to the direction of motion

Explanation:

Acceleration is the rate of change of velocity

The formula of the acceleration is a=\frac{v_{2}-v_{1}}{t} , where

  • v_{1} is the initial velocity
  • v_{2} is the final velocity
  • t is the time

A bus that goes  from 10 km/h to a speed of 50 km/h in 10 seconds

→ v_{1} = 10 km/h

→ v_{2} = 50 km/h

→ t = 10 seconds

Change the unite of the time from seconds to hour

→ 1 hour = 60 × 60 = 3600 seconds

→ 10 seconds = \frac{10}{3600}=\frac{1}{360} hour

Substitute these values in the formula of the acceleration above

→ a=\frac{50-10}{\frac{1}{360}}

→ a = 14400 km/h²

To change the unit of acceleration to meter per second change the

  kilometer to meter and the hour to seconds

→ 1 km = 1000 m

→ 1 hour = 3600 seconds

→ a=\frac{14400*1000}{(3600)^{2}}=\frac{10}{9}

→ a = 1.11 m/sec².

The acceleration of the bus is 1.11 meters per second square to the direction of motion

Learn more:

You can learn more about the acceleration in brainly.com/question/6323625

#LearnwithBrainly

You might be interested in
A football quarterback throws a football for a long pass. While in the motion of throwing, the quarterback moves the ball , star
sergejj [24]

This question is incomplete, the complete question is;

A football quarterback throws a 0.408 kg football for a long pass. While in the motion of throwing, the quarterback moves the ball 1.909 m, starting from rest, and completes the motion in 0.439 s. Assuming the acceleration is constant, what force does the quarterback apply to the ball during the pass ;

a) F_throw = 8.083 N

b) F_throw = 9.181 N

c) F_throw = 2.284 N

d) F_throw = 16.014 N

e) None of these is correct

Answer:

the quarterback applied a force of 8.083 N to the ball during the pass

so Option a) F_throw = 8.083 N is the correct answer

Explanation:

Given that;

m = 0.408 kg

d = 1.909 m

u = 0 { from rest}

t = 0.439 s

Now using Kinetic equation

d = ut + 1/2 at²

we substitute

1.909 = (0 × 0.439) + 1/2 a(0.439)²

1.909 = 0 + 0.09636a

1.909 = 0.09636a

a = 1.909 / 0.09636

a = 19.8111 m/s²

Now force applied will be;

F = ma

we substitute

F = 0.408 ×  19.8111

F = 8.0828 ≈ 8.083 N

Therefore the quarterback applied a force of 8.083 N to the ball during the pass

so Option a) F_throw = 8.083 N is the correct answer

5 0
3 years ago
How much power is necessary to do 50 J of work in 5 seconds
Alex73 [517]
Power = Work / Time

If W = 50 J and T = 5s

P = W/T = 50J/5s = 10 Watts
7 0
4 years ago
Read 2 more answers
A 405 Hz tuning fork and a piano key are struck together, and no beats are heard. When a 402 Hz tuning fork and the same piano k
NeX [460]

The difference between the frequencies of the piano key and the tuning fork gives the frequency of the beats.

When the tuning fork is 405 Hz, and no beats are heard, then the piano key is also 405 Hz.

When the piano key is 405 Hz and the tuning fork is 402 Hz, then 405 - 402 = 3 beats are heard.

The piano key is 405 Hz.

4 0
4 years ago
A parallel-plate capacitor with circular plates of radius R is being discharged. The displacement current through a central circ
Dvinal [7]

Answer:

The discharging current is I_d  =  36.8 \ A

Explanation:

From the question we are told that  

     The radius of each circular plates is  R

     The displacement current is  I  = 9.2 \ A

      The radius of the central circular area is  \frac{R}{2}

The discharging current is mathematically represented as

       I_d  =  \frac{A}{k} *  I

where A is the area of each plate which is mathematically represented as

       A  =  \pi R ^2

and   k is central circular area which is mathematically represented as

     k  =  \pi [\frac{R}{2} ]^2

So  

     I_d  =  \frac{\pi R^2 }{\pi * [ \frac{R}{2}]^2 } *  I

     I_d  =  \frac{\pi R^2 }{\pi *  \frac{R^2}{4} } *  I

     I_d  =  4 *  I

substituting values

     I_d  =  4 *  9.2

     I_d  =  36.8 \ A

     

7 0
3 years ago
Which of the following materials has the highest dielectric constant
8090 [49]

Answer: D. Tantalum pentoxide

Explanation:

It has the highest dielectric constant at 26

4 0
3 years ago
Other questions:
  • What measurements or observations tells you that a car is accelerating
    10·2 answers
  • I need to know the answer
    6·1 answer
  • A force of 660 n stretches a certain spring a distance of 0.300 m. what is the potential energy of the spring when a 70.0 kg mas
    15·1 answer
  • An 8 kg block is pushed across a horizontal surface by a horizontally oriented force whose magnitude varies in time. The instant
    6·1 answer
  • How can astronomers use rocks from the Moon to estimate the age of the solar system?
    13·1 answer
  • A bird sits on top of a 639 m tall tower. If it's gravitational potential energy up there is 2033 J, what is its mass?
    14·1 answer
  • An 1,840 W toaster, a 1,380 W electric frying pan, and a 70 W lamp are plugged into the same outlet in a 15 A, 120 V circuit. (T
    12·1 answer
  • Antacids contain bases that react with the acid in your stomach to relieve indigestion. In the reaction below, NaHCO3 reacts wit
    11·1 answer
  • Darwin believed that emotional expressions began as ________ that came to have evolutionary value because they ________. Select
    6·1 answer
  • When we jump off a boat towards the shore the boat moves back why​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!