well, in each rotation of the wheel, the wagon goes 2PI*r
speed car=2PIr/timeforonerotation=w*r
w=speedcar/r so change those speed in km/hr to m/s, find wi and wf
angacceleration= (wf-wi)/3sec
A racing car accelerates from 50 km per hour to 200 km per hour in 3.0 seconds along a straight track, and the acceleration is constant during this period. If the axles are 40 cm above the road, what is the magnitude of the angular acceleration of the wheels?
2 answers
So 200km/h is 55.5 m/s and 50km/h is 13.75 m/s.
Wi=55.5/0.4=138.75
Wf=13.75/0.4=34.36
(138.75-34.36)/3= 34.7
Thanks bob. I think this is correct, forgive my lack of units.
Wi=55.5/0.4=138.75
Wf=13.75/0.4=34.36
(138.75-34.36)/3= 34.7
Thanks bob. I think this is correct, forgive my lack of units.