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
Lera25 [3.4K]
3 years ago
8

What is the average velocity of a car if it travels from position 25m to a position of -7m in 34 seconds?

Physics
2 answers:
zubka84 [21]3 years ago
6 0

Answer:

vp = 0.94 m/s

Explanation

Formula

Vp = position/ time

position: Initial position - Final position

Position = 25 m - (-7 m) = 25 m + 7 m = 32 m

Then

Vp = 32 m / 34 seconds

Vp = 0.94 m/s

CaHeK987 [17]3 years ago
4 0

Answer:

Average velocity = 0.94 m/s

Explanation:

Given

Initial position A = 25 m

Final position B = -7 m

Duration t = 34 s

Solution

Average Velocity

v_{avg} =\frac{Displacement}{time} \\\\v_{avg} =\frac{A-B}{t} \\\\v_{avg} =\frac{25-(-7)}{34} \\\\v_{avg} =0.94 m/s

You might be interested in
An FM radio station broadcasts electromagnetic radiation at a frequency of 93.5 MHz. The wavelength of this radiation is _______
Alborosie

Answer:

3.21

Explanation:

The relation between frequency and wavelength is shown below as:

c=frequency\times Wavelength


c is the speed of light having value 3\times 10^8\ m/s

Given, Frequency = 93.5 MHz = 93.5\times 10^{6}\ Hz

Thus, Wavelength is:

Wavelength=\frac{c}{Frequency}

Wavelength=\frac{3\times 10^8}{93.5\times 10^{6}}\ m

Wavelength=3.21 \ m

<u>Answer - A.</u>

7 0
3 years ago
A 2.0-kg laptop sits on the horizontal surface of the seat of a car moving at 8.0 m/s. The driver starts slowing down to stop. F
ivanzaharov [21]

Answer: 32.65\ m

Explanation:

Given

mass of laptop m=2 kg

The velocity of car u=8 m/s

The coefficient of static friction is \mu_s=0.4

The coefficient of kinetic friction is \mu_k=0.2

As the car is moving, so the coefficient of kinetic friction comes into play

deceleration offered by friction \mu_kg=0.2\times 9.8\ m/s^2

Using the equation of motion v^2-u^2=2as\\

insert the values

0^2-8^2=2(-0.2\times 9.8)s\\\\s=\dfrac{64}{1.96}\\\\s=32.65\ m

4 0
3 years ago
3. The pressure at the bottom of the ocean is great enough to crush submarines with steel walls that are 10 centimeters thick. S
Elden [556K]

Answer:

just awnsered this one your awnser is the the second option

3 0
2 years ago
Read 2 more answers
The gravity of earth depends on the _____ from its ____ . as this _____increase, the magnitude of the gravity _____.
Anna [14]
<span>The gravity of earth depends on the magnetism from its core. as this magnetism increases, the magnitude of the gravity increases.</span>
3 0
3 years ago
What is the force due to gravity of a 38 kg student?
alukav5142 [94]

Answer:

F_g = 372.78 N

Explanation:

Formula for force of gravity is;

F_g = mg

Where;

m is mass

g is acceleration due to gravity

We are given;

Mass = 38 kg

Acceleration due to gravity has a constant value of 9.81 m/s²

Thus;

F_g = 38 × 9.81

F_g = 372.78 N

6 0
3 years ago
Other questions:
  • A horse is harnessed to a sled having a mass of 236 kg, includ- ing supplies. The horse must exert a force exceeding 1240 N at a
    15·2 answers
  • What form of energy does a block of chocolate have?
    11·1 answer
  • An electric device uses 650 watts of power. If the voltage is 120 volts, what is the resistance?
    14·2 answers
  • If a green ball has a greater momentum than an orange ball and both balls are moving at the same velocity, then _________.
    13·2 answers
  • 20 points!
    10·2 answers
  • Which of the following changes can happen when the forces on an object are unbalanced?
    10·1 answer
  • Is the following measurement a vector quantity or a scalar quantity?<br> 68 km South
    8·2 answers
  • Answer this please.____
    13·1 answer
  • What is the work required to lift a 10 kg box off the ground to a height of<br> 5.0 m?
    6·1 answer
  • Una esfera de aluminio de 0,5cm de radio se introduce en alcohol. Calcular la indicación que marca el diámetro cuando esta dentr
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!