Recent content by connphysics

thank you so much ! finally making sense now ! but how do i convert mph to m/s ? is there a website that can do that for me ? thanks sooooo much

thanks all- but I'm more confused than ever now ! the original problem was - - if a cars mass is 1604 kg and it is traveling at a speed of 60 mph ...then it's KE is .5 X 1604 X 60 squared = a KE of 2,88,200 J ...now...my question is...using the work energy theorem - what is the TOTAL work...

can anyone help me understand this - I don't know how to convert 60 mph to ms the original problem is - if a cars mass is 1604 kg and it is traveling at a speed of 60 mph ...then it's KE is .5 X 1604 X 60 squared = a KE of 2,88,200 J ...now...my question is...using the work energy theorem -...

jay ! thanks so much ! could u help me convert them please !?

ahh..I see...yeah...not trivial at all ;) Centaur - one final question for you ...how can I calculate the AVERAGE power during the acceleration of 9.9 s ?

then wouldn't the total work be 2,887,200 J ? that IS the diff in KE I think !

the total work to get to a speed of 60 mph ?

so...the TOTAL work would be 2,887,200 J ?

if a cars mass is 1604 kg and it is traveling at a speed of 60 mph ...then it's KE is .5 X 1604 X 60 squared = a KE of 2,88,200 J ...now...my question is...using the work energy theorem - what is the TOTAL WORK done to get to a speed of 60 mph ??

i got it thanks ! one more question - if a cars mass is 1604 kg and it is traveling at a speed of 60 mph ...then it's KE is .5 X 1604 X 60 squared = a KE of 2,88,200 J ...now...my question is...using the work energy theorem - what is the TOTAL WORK done to get to a speed of 60 mph ??

ok...I think I just did...and I got an average accel of 2.709 m s s ...sound right to you ?

Although Nissan hasn't advertised it, other sources report that the Nissan Leaf electric car can accelerate from 0 to 60 mph in 9.9 seconds. Assuming THIS data is correct, What is the AVERAGE acceleration of the Leaf in m/s/s ? (meters per second squared) ? I know I should be using Vf-Vi / t...