Recent content by RoryOBigtool

i wrote this... it was to change the 30mph to kph then to m/s then to acceleration

to change that into meters would make it 13.41 m/s would that be correct?

the lorry is traveling at a constant velocity of 30MPH which in turn works out to be 48.27KPH. which part A? can you quote it :) thanks

I think i may have figured out B) :) The force required to accelerate the loaded lorry A= (v2-u2) / 2s A= (13.41^2 - 0) / 2(80) A= 179.83 / 160 A= 1.12m/s2 F=ma F= 3100 x 1.12 F= 3472N The retardant force. (the deceleration was given in the question) F=ma F= 3100 x -1.5 F= -4650N now the...

thats the problem i face. it says in the background info that: The lorry is then loaded with 800 kg of building materials that need to be transported over a total distance of 0.6 km. After loading, the lorry accelerates over a distance of 80m to attain a velocity of 30mph again. that is all the...

For the force Required for the unloaded lorry: A=V/T A= ((30 x 1.6093)x1000) / 3600 A= 13.41 / 10 A= 1.341 m/s2 F=ma F= 2300 x 1.341 F= 3084.3 N The retarding force A= (v2-u2) / 2s A= (0 - 13.41^2) / 2(70) A= 179.83 / 140 A= - 1.28m/s2 F=ma F= 2300 x -1.28 F= -2944N Time : the first...

1. Homework Statement Ok I have been given an assignment and asked to answer questions about a lorry loaded and unloaded. the Text is as follows: An unloaded lorry of mass M kg accelerates from rest and reaches a velocity of 30mph in 10 seconds. It then travels at constant velocity for half a...

hey i edited the original message. i think i have got the full way to B) correctly. I need B to continue though, so you can see my de lima. I usually know what I am talking about when it comes to physics but this has really stumped me! any help is a positive result :) Also does anyone know the...

Homework Statement Ok I have been given an assignment and asked to answer questions about a lorry loaded and unloaded. the Text is as follows: An unloaded lorry of mass M kg accelerates from rest and reaches a velocity of 30mph in 10 seconds. It then travels at constant velocity for half a...