Could you please help me on this question or answer it please?
A van of mass 1200kg moves along a horizontal straight road. At time t seconds, the resultant force on it has magnitude 60000/(t+5)^2 and acts in the direction of motion of the van. When t=0, the van is at rest. the speed of the van approaches a limiting value Vms^-1.
A) the value of V,
B) The distance moved by the van in the first 4 seconds of its motion.
M3 question! :) watch
- Thread Starter
- 09-04-2013 18:11
Offline13ReputationRep:PS HelperStudy Helper
- PS Helper
- Study Helper
- 09-04-2013 18:25
For part A: you have ; you can evaluate the integral to get a value for V. My answer (jotted on an envelope so may be wrong) is in the spoiler:
The distance moved by the van is fairly easy now because you have an expression for its instantaneous velocity at time t':
, so you can integrate both sides again to get an expression for x(t').