La fuerza de rozamiento es imprescindible para que un coche pueda circular de forma controlada. Razona cuales de estos factores afectan al valor de rozamiento. a) el peso del coche
b) el dibujo de las ruedas
c) el consumo de combustible
d) el tipo de movimiento
e) anchura del vehiculo

Estimate the kinetic energy of mars with respect to the sun as the sum of two terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. (assume mars is a uniform sphere with mass = 6.4×10 to the power of 23 kg, radius = 3.4×10 to the power of 6 m, rotation period = 24.7 hours, orbital period = 686 days and is 2.3×10 to the power of 8 km from the sun.)