Question

a) How does doubling your velocity affect your kinetic energy? b) How does trippling your velocity...

a) How does doubling your velocity affect your kinetic energy?

b) How does trippling your velocity affect your kinetic energy?

c) If your velocity doubles, how much further will it take you to stop when you apply a force?

d) If your velocity triples how much further will it take you to stop when you apply a force?

Homework Answers

Answer #1

EDIT:

Typed version of the answer:

KE is given by:

K = 1/2*m*v^2

Thus KE is directly proportional to the square of the velocity.

Thus:

(a) KE increases by (2)2 = 4 times

(b) KE increases by (3)2 = 9 times

Now, we have, v = at

=> t = v/a

Thus t is directly proportional to v. Thus we have:

(c) It will take twice the time.

(d) It will take thrice the time.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A of a) b) c) d) How much kinetic energy was lost in the collision. A...
A of a) b) c) d) How much kinetic energy was lost in the collision. A 15cm radius wheel begins to rotate about its center at an angular speed 45 rads/s. It accelerates at 3.0 rad/s2 for 15s. 1. What is the final angular velocity and direction? 2. Find the velocity of a point on its rim. 3. How many revolutions does it make? 4. Find the average angular of the wheel from start to finish.
1.) a.)How many kinetic energy modes does a triatomic molecule have? b.)Treating the molecule as one...
1.) a.)How many kinetic energy modes does a triatomic molecule have? b.)Treating the molecule as one particle, how many translational kinetic energy terms does it have? what about rotational kinetic energy terms? c.)How many vibrational kinetic energy modes can this molecule have, if the total number of kinetic energy modes is what you found in a. d.)Count all vibrational modes. Categorize the modes into types of kinetic and potential energy modes e.)Find the total number of modes for a gas...
2. A 50kg gymnast jumps off of the balance beam with an upward velocity of 5...
2. A 50kg gymnast jumps off of the balance beam with an upward velocity of 5 m/s and hits the ground moving at a speed of 10 m/s. a. How much kinetic energy does the gymnast have when she first jumps off the balance beam? b. How much kinetic energy does the gymnast have at her peak height? c. How much work did the Earth do on the girl from when she first jumped, to her peak height? d. How...
Calculate the root mean square velocity and kinetic energy of CO, CO2, and SO3 at 264...
Calculate the root mean square velocity and kinetic energy of CO, CO2, and SO3 at 264 K .​ A. Calculate the root mean square velocity of CO at 264 K B. Calculate the root mean square velocity of CO2at 264 K . C. Calculate the root mean square velocity of SO3at 264 K . D. Calculate the kinetic energy of CO at 264 K . E.Calculate the kinetic energy of CO2 at 264 K . F. Calculate the kinetic energy...
A electron is accelerated to a kinetic energy of 100 MeV at the end of a...
A electron is accelerated to a kinetic energy of 100 MeV at the end of a linac and then drifts 1.45 m to a target in the laboratory a) What is the distance from the end of the linac to the target in the rest frame of the electron? b) As measured in the laboratory, what is the velocity of the electron and how much time does it take for the electron to hit the target after it exits the...
A) Rotational kinetic energy involves: Velocity, mass, acceleration; Velocity and mass only; Angular velocity, moment of...
A) Rotational kinetic energy involves: Velocity, mass, acceleration; Velocity and mass only; Angular velocity, moment of inertia, angular acceleration; Angular velocity and moment of inertia only. B) Any object’s moment of inertia depends on its: Size only; Size and shape only; Mass only; Size, shape and mass. C) For a given mass, the largest moment of inertia will be when it is shaped into a: Ring; Sphere; Disk. D) For a given mass, the largest moment of inertia will be...
How much energy does friction take from a 0.77-kg book sliding across the floor if the...
How much energy does friction take from a 0.77-kg book sliding across the floor if the frictional force is -2.09 newtons and the book slides to a stop from 1.2 m/s?
18) (b) Consider the following statement:        If an object has a changing kinetic energy, then...
18) (b) Consider the following statement:        If an object has a changing kinetic energy, then it is subject to a non-zero net force. (a) Is this statement valid? __________ (b) If you contend the statement is valid, how do you know? (c) If you contend the statement is invalid, what is wrong with it? (d) If the statement is invalid, restate it to give a valid statement. (e) Is the valid statement (original, or your revision) a conditional or...
1. What is the weight of a 1.2kg mass on Earth? 2. How much potential energy...
1. What is the weight of a 1.2kg mass on Earth? 2. How much potential energy is given to a 1.0kg mass when raising it up 1.0 meters (on Earth)? 3. If a 1000kg car doubles its speed from 2m/s to 4m/s, by what factor does its kinetic energy increase? 4.An athlete pushes a 2kg shot put with 20N of force during a throw. How much does it accelerate? please don't hand write the answers.
How does a steady magnetic field affect the velocity of moving charged particle when the velocity...
How does a steady magnetic field affect the velocity of moving charged particle when the velocity is perpendicular to the magnetic field?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT