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
irinina [24]
2 years ago
10

PLEASE HELPPPPPPPP What is the average velocity of a train that goes 86 km in 1.3 hours?

Physics
1 answer:
olga_2 [115]2 years ago
5 0
The answer is:

V = d/t d = 86 km t = 1.3 hrs

V = 86 km/ 1.3 hrs

V = 66.15 km/ hrs

I hope this helps!!
You might be interested in
A rock is thrown with a force of 500 N and an acceleration is 75 m/s^2. What is its mass?
artcher [175]

Answer:

We conclude that the mass of a rock with a force of 500 N and an acceleration of 75 m/s² is 6.7 kg.

Hence, option D is correct.

Explanation:

Given

  • Force F = 500 N
  • Acceleration a = 75 m/s²

To determine

Mass m = ?

Important Tip:

  • The mass of a rock can be found using the formula F = ma

Using the formula

F = ma

where

  • F is the force (N)
  • m is the mass (kg)
  • a is the acceleration (m/s²)

now substituting F = 500, and a = 75 m/s² in the formula

F = ma

500 = m(75)

switch sides

m\left(75\right)=500

Divide both sides by 75

\frac{m\cdot \:75}{75}=\frac{500}{75}

simplify

m=\frac{20}{3}

m=6.7 kg

Therefore, we conclude that the mass of a rock with a force of 500 N and an acceleration of 75 m/s² is 6.7 kg.

Hence, option D is correct.

7 0
3 years ago
What are the relationships of the different types of matter, mass, and the change in the average kinetic energy of particles?
Evgesh-ka [11]

matter = solid, liquid gas.

energy typyes, kinetc in a gas, kinetc and electrostatic in solids and liquids

6 0
3 years ago
A 15 N force is applied on a car which cover a distance 30 metre in 10 second .Calculate the work done​
Zolol [24]

Answer

The answer is 20N

Explanation:

3 0
2 years ago
I need help on this question, please.
frez [133]

Answer:

|X| = 72 cm

Explanation:

We need to find the magnitude of vector X.

Vector Y = 21 cm

Vector Z = 75 cm

We know that, the magnitude of resultant vector is given by :

Z={X^2+Y^2} \\\\X^2=Z^2-Y^2\\\\X^2=(75)^2-(21)^2\\\\X=72\ cm

So, the value of magnitude of vector X is 72 cm

4 0
2 years ago
What impulse results if the force acting on an object is described by the force-time graph shown?
Hoochie [10]
The correct answer to this question is "2.1 kgm/s." The impulse results if the force acting on an object that is described by the force-time graph shown is that 2.1 kgm/s. Based on the graph, it shows like a plateau with the flat at the force of 2.1 N.
8 0
3 years ago
Other questions:
  • If there is a new moon every month, where does the old one go?
    8·2 answers
  • In a thunder and lightning storm there is a rule of thumb that many people follow. After seeing the lightning, count seconds to
    11·1 answer
  • A coil of wire with 60 turns lies on the plane of the page, and a uniform magnetic field points into the page with a strength of
    7·1 answer
  • A student sorted mineral samples into two groups: dull and shiny. Which of the following properties did the student use to sort
    6·2 answers
  • Why has the model of the atom changed over time?
    11·1 answer
  • An object that has negative acceleration is definitely doing what?
    7·2 answers
  • The electric motor of a model train accelerates the train from rest to 0.685 m/s in 21.5 ms. The total mass of the train is 875
    8·1 answer
  • What is resistance to motion called?​
    14·1 answer
  • A student uses the right-hand rule as shown.
    6·1 answer
  • What is meant by the term 'total internal reflection'? (GCSE Level)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!