on b), twice the mass means twice the momentum and twice the energy.
a) change 65mph to m/s. To check that, put this in your google search window:
65miles/hr in m/s
a 2646lb car is moving on the freeway at 69 mph.
(a) Find the magnitude of its momentum and its kinetic energy in SI units.
(b) At what speed, in m/s, will the car's momentum be half of what it is in part (a).
(c) At what speed, in m/s, will the cats kinetic energy be half of what it is in part (a)
9 answers
If you are a teacher, which I doubt, you should have failed physics in college. If you are an imposter, stop it.
chyene:
a. change to SI units, monetum=massinKg*velocityinm/s
b. halve the speed to halve the momentum.
c. reduce the speed to speed/sqrt(2)=.707 speed
chyene:
a. change to SI units, monetum=massinKg*velocityinm/s
b. halve the speed to halve the momentum.
c. reduce the speed to speed/sqrt(2)=.707 speed
bobpursley, i am sorry your that way i past it and i am sorry i wrote it wrong
Ms.Black -- do you mean?
"Bobpursley, I am sorry you're that way. I passed it and I am sorry I wrote it wrong."
"Bobpursley, I am sorry you're that way. I passed it and I am sorry I wrote it wrong."
I am a teacher i am a 2nd grade if has been 19 years since i have done this level physics
You should provide a better English model for your students. Heaven help them if they don't know to capitalize I and that you're means you are. You apparently are not teaching them to begin sentences with capital letters and end them with periods.
I am a math teacher.
For 2nd grade? Please!!
It doesn't really matter what grade or subject you teach, if you can't write better in English than that, you have no business in a classroom.
It doesn't really matter what grade or subject you teach, if you can't write better in English than that, you have no business in a classroom.
Amen!
1 answer