Question

An EV starts at rest at position A and ends its travel at position C as shown in the following figure. The EV starts at zero speed at A and accelerates uniformly over time and reaches to 80 mile/hour at point B From point B to C it starts with 80 mile/hour and accelerates uniformly over time during this period and reaches 100 mile/hour at point C. The vehicle has the following parameter values: m-700 kg, CD-0.2, AF 2.1 m2, Co-0.009, C1 1.7x106 s/m Also, take density of air p 1.16 kg/m3, and acceleration due to gravity g 9.81 m/s, Vehicle ends 30 degree Vehicle starts « 50m> a) Sketch and label the velocity profile of the vehicle from the time it starts at point A to the time it reaches point C. How much time does the vehicle take to reach to point C? b) Calculate the change in the gravitational potential energy, from start at point A to end at point C. c) Calculate the energy loss Etoss from start at point A to end at point C

Answer 1

30 atletvrate witth uniorm alle VB" bonikhm_ Box o.uv70ч. | r.2R8.867 m 104冫 etoc 06,32 S ms

2 6.232S A T7. 0l2 see. Total sin taken A Veloi radVehile U4. 7.022 TC) Chaige in rratat poteutil enm 7oOx 9.BIx 8. 86 7