According to the definition of power, a powerful person is able to do which of the following?
a. lift heavy objects
b. do less work in more time
c. do more work in less time
d. exert a larger force for a longer time

What produces a record of seismic waves? richter scale seismogram barometer seismograph

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?