Why does a bowling ball weight so much?

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.