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
Charra [1.4K]
2 years ago
12

How long does it take for a train to increase its velocity from 10m/s to 40m/s if it accelerates at 3 m/s

Physics
1 answer:
DIA [1.3K]2 years ago
6 0

Answer:

Explanation:

Givens

Vi = 10 m/s

Vf = 40 m/s

a = 3 m/s^2

Formula

a = (vf - vi) /t              Substitute the givens into this formuls

Solution

3 = (40 - 10) / t          Multiply both sides by t

3*t = t(40 - 10)/t        Combine. Cancel t's on the right

3*t = 30                     Divide by 3

3t/3 = 30 / 3

Answer: t = 10 seconds.

You might be interested in
What best describes the dropping height of a ball that bounced back up to a height of 45 centimeters?
murzikaleks [220]

Answer:C:Less than 45 centimeters, as the ball transforms some of its potential energy into thermal energy and sound energy

Less than 45 centimeters, as the ball transforms some of its potential energy into thermal energy and sound energy.

Although the initial energy (potential energy is preserved), the energy of deformation as the ball strikes a surface creates energy dissipation in the form of frictional heat and audible sound energy.

Every time the ball bounces, its height will be less than its previous height.

Explanation:

6 0
3 years ago
7. What is the velocity of an object with a distance of 90m south and a time of<br> 5s?
IrinaK [193]

Answer:

Explanation:

v= s/t

V =90m/5s

V = 8m/s

4 0
2 years ago
The force of gravity on Mercury is less than the Earth because:
Vinvika [58]
Mercury has less mass than earth. So the answer is B
7 0
3 years ago
Read 2 more answers
Jack and jill are married. this year jack earned $72,000 and jill earned $80,000 and they received $4,000 of interest income fro
MaRussiya [10]
<span>If Jack is filing married-filing-separate he would report $76,000 gross income as head of household.</span>
4 0
3 years ago
What part of the atmosphere contains dust, water vapor, and 75% of all gases
Alexeev081 [22]

Answer:

Troposphere

Explanation:

Our atmosphere yay

7 0
3 years ago
Read 2 more answers
Other questions:
  • Friction in a car's engine produces some wasted _____ energy.
    14·2 answers
  • Service conductors installed as unjacketed multiconductor cable shall ahv a minimum clearance of ft from windows that are design
    10·1 answer
  • What is the acceleration of a 30.0-kg go kart if the thrust of its engine is 300.0 N?
    12·2 answers
  • The expression below was formed by combining different gas laws.
    8·1 answer
  • The risk of earthquakes is high along the Pacific coast of the United States because a. There have been no earthquakes there lat
    6·1 answer
  • What is the difference between a contact force and a field force?
    7·1 answer
  • Maria drove to the store and then to work.
    14·1 answer
  • Hey what is Krichoff rule<br>good morning​
    13·2 answers
  • What are the phenomena that physics in applied in ?​
    14·1 answer
  • Equal forces that do not cause a change in an object's motion
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!