Aluge run is straight for the first 10 m. if the velocity of the luger when he passes the start line is +25 m/s and his acceleration is constant at +9.5 m/s2, about how fast is he going when he hits the first turn? a. +14 m/s b. +26 m/s c. +29 m/s d. +225 m/s

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.)