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
finlep [7]
3 years ago
11

the kinetic energy of an object with mass m moving with a velocity of 5 m/s is 25 j what will be its kinetic energy when its vel

ocity is doubled what will its kinetic energy when it is velocity increased 3 time
Physics
1 answer:
Dmitriy789 [7]3 years ago
4 0

Answer:

100 J, 225 J

Explanation:

The kinetic energy of an object is given by:

K=\frac{1}{2}mv^2

where

m is the mass of the object

v is the velocity of the object

In this problem, the initial kinetic energy of the object is

K = 25 J

Then, the velocity is doubled, which means

v' = 2v

Therefore, the new kinetic energy will be

K'=\frac{1}{2}m(2v)^2 = 4(\frac{1}{2}mv^2)=4K

Therefore, the kinetic energy has quadrupled:

K' = 4(25)=100 J

Later, the velocity is tripled, which means

v'' = 3v

Therefore, the new kinetic energy will be

K''=\frac{1}{2}m(3v)^2 = 9(\frac{1}{2}mv^2)=9K

Therefore, the kinetic energy has increased by a factor of 9:

K' = 9(25)=225 J

You might be interested in
4. The Voyager 1 and 2 spacecraft are now out beyond the orbit of Pluto. They have run out of fuel long ago but are still moving
tekilochka [14]

Answer:

C

Explanation:

According to Newton's first law of motion, which states that a body will continue in its state of rest or uniform motion unless acted upon by an external force to change its state of rest or uniform motion. So, the Voyagers spacecraft will continue to move in the same way at the constant speed of 50,000 mph unless acted upon by a force.

7 0
3 years ago
Read 2 more answers
A motorcycle skids to a stop on a road.
Svetlanka [38]

Answer:

Friction of the road on the motorcycle in the opposite direction

Explanation:

Khanacademy

5 0
2 years ago
Answer the question below please I give brainliest
Basile [38]

Answer: The first one

Explanation: I think it's the first one because it says what is the "least" gravitational potential energy story between the prairie dog and Earth that said resting in its borrow is using less energy

7 0
2 years ago
Read 2 more answers
A car of 1400 kg is subject to multiple forces which produce an acceleration of 3.5 m/s2 directed north. Find the net force.​
Greeley [361]

Answer:

will

Explanation:

3 0
3 years ago
Anaerobic transmission is when you touch a contaminated surface true or false
Keith_Richards [23]
True because my mom said to me this morning that i have to take my breakfast
5 0
2 years ago
Other questions:
  • How are chargeable cells different from ordinary dry cells​
    13·1 answer
  • Which statement regarding the importance of human relations is false? A. People accomplish more in their work and personal lives
    6·2 answers
  • A solenoid 0.425 m long has 950 turns of wire. What is the magnetic field in the center of the solenoid when it carries a curren
    14·1 answer
  • Which of the following would have the strongest electric field? MULTIPLE CHOICE.
    9·1 answer
  • A toy car starts from rest 0.650m from the edge of a table. The car accelerates at 2.50 m/s^2 until it leaves the table. The toy
    7·1 answer
  • A sound source is located somewhere along the x-axis. Experiments show that the same wave front simultaneously reaches listeners
    14·1 answer
  • Engineers want to design seats in commercial aircraft so that they are wide enough to fit 95​% of all males.​ (Accommodating 100
    15·1 answer
  • How is a driver supposed to act?
    12·2 answers
  • A student switches the torch on and sees that it gives out a bright light.
    15·2 answers
  • David and Fiona want to know about how mass affects the motion of an object. David uses three objects with masses of 2 kg, 3 kg,
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!