1. A moving object collides with a stationary object and the two objects stick together. Which of the following statements describes the transformation of kinetic energy during the collision?
a) All of the kinetic energy is transformed to momentum.
b) Some, but not all, of the kinetic energy is transformed to momentum.
c) All of the kinetic energy is transformed to heat energy.
d) Some, but not all, of the kinetic energy is transformed to heat energy.
2. A bicyclist rides at a constant speed of 3.5m/s up a slope at 4.5 degrees to the horizontal. If the total mass of the person and the bicycle is 85kg, what is the power of the cyclist?
A. 23 W
B. 65W
C. 230 W
D. 2900 W