Q1. A 65.0 kg human sprinter can accelerate from rest to 10 m/s in 2.90 s. all through the same interval, a 33 kg greyhound can accelerate from rest to 20 m/s. calculate (a) change in kinetic energy and (b) average power output for each.
Q2. The weight of passengers on a roller coaster increases by 53 percent as the car goes through a dip with a 30 radius of curvature.
What is the car's speed at the bottom of dip?