David jumps from the ground onto a 25 inch tall box. The time that elapsed was 0.89 seconds. a. draw a diagram of the motion and label the initial position (x i ) and final position (x f ) b. find the distance (d) the person travelled
c. calculate the speed (s) using distance and total time—show your work
d. find the displacement (Δx) including a direction
e. calculate the velocity (v) using the displacement and change in time—show your work

You and a friend (alex) are at a a tree-top adventure park .. . part of the course requires you to climb up a rope. you both climb the same rope in the same amount of time. however, the tension in the rope is greater when alex climbs. who did the most work? alex did - more tension means more force - more force means more work was done you did - less tension means less force - less force means more work was done to find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? when more work was done, the couch was moved less. when more work was done, the couch was moved further. when more work was done, the couch wasn't moved at all. when more work was done, the couch was moved the same distance.

The mini-refrigerator fire was most likely caused by what type of wiring?

In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.