Assignment:
Take g= 9.8ms(-2)
Answer all questions with full explanations:
A cyclist starting from rest freewheels for 200m down a slope of 1 in 10 (sin0 = 0.1) If the mass of the cycle and rider is 75kg:
1) What is the loss of potential energy of the cycle+rider?
2) If the speed of the cycle at the bottom of the hill is 10ms(-1) what is the kinetic energy of the cycle+rider?
3) What is the energy lost as friction?
4) What is the average friction force?