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
irakobra [83]
3 years ago
5

During which time period was the acceleration of the car the greatest?

Physics
2 answers:
Murljashka [212]3 years ago
8 0
C.) 2-3 seconds
And I know this is right
Allisa [31]3 years ago
6 0

c.) 2-3 seconds

Explanation:

Acceleration is defined as the ratio of change in velocity per unit time:

a=\frac{\Delta v}{\Delta t}

In a velocity-time graph, like the one attached here, acceleration corresponds to the slope of the curve.

Let's calculate the acceleration of the car in the different sectors:

a) 5-8 seconds: a=\frac{4 m/s-4 m/s}{8 s-5 s}=0

b) 0-2 seconds: a=\frac{5 m/s-0 m/s}{2 s-0 s}=2.5 m/s^2

c) 2-3 seconds: a=\frac{2 m/s-5 m/s}{3 s-2 s}=-1.5 m/s^2

d) 3-5 seconds: a=\frac{4 m/s-2 m/s}{5 s-3 s}=1.0 m/s^2

So, the acceleration is greatest in c) 2-3 seconds (the negative sign means it is a deceleration)

You might be interested in
A distance of 0.002 m separates two objects of equal mass. If the gravitational force between them is
Alika [10]

Answer: 24.97 kg

Explanation:

The gravitational force between two objects of masses M1, and M2 respectively, and separated by a distance R, is:

F = G*(M1*M2)/R^2

Where G is the gravitational constant:

G = 6.67*10^-11 m^3/(kg*s^2)

In this case, we know that

R = 0.002m

F = 0.0104 N

and that M1 = M2 = M

And we want to find the value of M, then we can replace those values in the equation to get

0.0104 N = (6.67*10^-11 m^3/(kg*s^2))*(M*M)/(0.002m)^2

(0.0104 N)*(0.002m)^2/(6.67*10^-11 m^3/(kg*s^2)) = M^2

623.69 kg^2 = M^2

√(623.69 kg^2) = M = 24.97 kg

This means that the mass of each object is 24.97 kg

6 0
3 years ago
Fellow student of mathematical bent tells you that the wave function of a traveling wave on a thin rope is y(x,t)= 2.20 mm cos[(
bezimeni [28]

Answer

given,

y(x,t)= 2.20 mm cos[( 7.02 rad/m )x+( 743 rad/s )t]

length of the rope = 1.33 m

mass of the rope = 3.31 g

comparing the given equation from the general wave equation

y(x,t)= A cos[k x+ω t]

A is amplitude

now on comparing

a) Amplitude  = 2.20 mm

b) frequency =

     f = \dfrac{\omega}{2\pi}

     f = \dfrac{743}{2\pi}

          f = 118.25 Hz

c) wavelength

        k= \dfrac{2\pi}{\lambda}

        \lambda= \dfrac{2\pi}{k}

        \lambda= \dfrac{2\pi}{7.02}

        \lambda= 0.895\ m

d) speed

         v = \dfrac{\omega}{k}

         v = \dfrac{743}{7.02}

                v = 105.84 m/s

e) direction of the motion will be in negative x-direction

f) tension

  T = \dfrac{v^2\ m}{L}

  T = \dfrac{(105.84)^2\times 3.31 \times 10^{-3}}{1.33}

      T = 27.87 N

g) Power transmitted by the wave

  P = \dfrac{1}{2}m\ v \omega^2\ A^2

  P = \dfrac{1}{2}\times 0.00331\times 105.84\times 743^2\ 0.0022^2

      P = 0.438 W

5 0
3 years ago
The mountains most commonly found at divergent plate boundaries are
dybincka [34]
fault-block mountains. hope this helps
8 0
3 years ago
1. The geologic time scale divides time into years and centuries, true or false
hodyreva [135]

Answer:

The answer is "False"

Explanation:

The geologic time scale is the "schedule" for occasions in Earth history. It partitions time into named units of unique time called in descending order of duration "eons, eras, periods, epochs, and ages". The specification of those geologic time units depends on stratigraphy, which is the relationship and order of rock layers. The fossil structures that happen in the stones, nonetheless, give the central methods for setting up a geologic time scale, with the circumstance of the development and vanishing of far and wide species from the fossil record being used to outline the beginnings and endings of ages,, periods, and different stretches.

Geologic time is the broad time period involved by the geologic history of Earth. Formal geologic time starts toward the beginning of the Archean Eon (4.0 billion to 2.5 billion years back) and proceeds to the current day.

5 0
3 years ago
What do electrons move from
Alona [7]

Answer:

Negatively charged, to positively charged parts

Explanation:

Electrons are negative, negative is attracted to positive.

7 0
3 years ago
Other questions:
  • What did Rutherford’s model of the atom include that Thomson’s model did not have?
    12·1 answer
  • When people use plastic combs on their hair, the combs become negatively charged. Which statements about this situation are true
    10·2 answers
  • The pH of pure water at 25°C is 7.0. The enthalpy change of the autoionization of water is +55.89 kJ/mol. What is the pH of pure
    9·1 answer
  • 20. Sterling Archer, despite failing repeatedly at pole-vaulting, is determined to master the skill. He is holding a vaulting po
    11·1 answer
  • Which major biome group is most of the united states part of?
    8·1 answer
  • 2 Grade 11 Physics Questions. Will Mark BRAINLIEST!!!
    13·2 answers
  • Assume that a clay model of a lion has a mass of 0.225 kg and travels on the ice at a speed of 0.85 m/s. It hits another clay mo
    8·1 answer
  • What is the Ultraviolet Catastrophe?​
    11·1 answer
  • Science is the strategy to make your friends complain and die because of your low iq. True or False?
    12·1 answer
  • 6. Which does more wor:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!