Recent content by JPhysic

I need to know at: 10mph - 70mph with a mass at 1457Kg, what force is needed to bring the car to a stand still

I'm sorry my friend, but you just confused the hell out of me...

Homework Statement I am just enquiring about car brakes, and figuring out how much force needs to be applied to stop a moving object (car). Homework Equations 1457Kg – Curb weight of the car (overall mass) F = M x A 1457kg x 10mph = 14570 (Newtons) 1457kg x 20mph = 29140 N...

Thank you very much gentlemen, you have been brilliant, many thanks!

Thank you, but what other methods are there to measuring density?

Homework Statement What are the various methods of measuring the density of a swimming pool water sample. Homework Equations The Attempt at a Solution I thought the best way of measuring the density would be to fill a tube which you know the mass of with the liquid, then subtract...

For question 1, I got the answer: .04T 0.4 = V Final Velocity V=U+AT 10 / T _____ T mps which is my accelerationt= v-u -------- a t= 0.4 - 0 ---------- 10 ---------- T Time = .4 ---- 10 T = 0.4T Am I right or wrong? any help please guys!

Hey guys, I am rather stuck with my work from College, I missed a bit of College as I was having treatment for Cancer, and so I missed a lot of work :frown:, but I'm desperately trying to catch up! If anyone could help me with my work, I would really appreciate it, thank you guys/gals!