Given this graph plotting velocity versus time, estimate the acceleration of object A at points X and Y respectively. A. 0 meters/second2 and -1 meter/second2
B. 0 meters/second2 and +1 meter/second2
C. 5 meters/second2 and -2 meters/second2
D. 9 meters/second2 and -1 meter/second2
E. 0 meters/second2 and +3 meters/second2

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.