A car traveling on a highway at 55 miles per hour (MPH) came to a sudden stop. What is its acceleration? a.) 0
b.) - 9 m/s2
c.) 0.5 m/s
d.) 2 m/s2

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

How much power could a wind turbine produce if it had the following specifications? cp = 0.45 -d=1.2kg/m3 d=50m v 5m/s