17. A 60.-kilogram student climbs a ladder a vertical distance of 4.0 meters in 8.0 seconds. Approximately how much total work is done against gravity by the student during the climb?

A busy chipmunk runs back and forth along a straight line of acorns that has been set out between his burrow and a nearby tree. At some instant the chipmunk moves with a velocity of - 1.15 m/s. Then, 2.11 s later, it moves at a velocity of 1.63 m/s.

Does the moon have an atmoshphere?

List five uses of electromagnets identified in the article. Made-to-Order Magnets.

Skateboarder fell do a new job. She got up and after five seconds, return to a velocity of 5M/S. What is her acceleration?

A 1000-kg car traveling at 66 m/s hits a 2000-kg car at rest and the two travel together after the collision. calculate the speed with which they move.

How many (whole number of) 77 kg people can safely occupy an elevator that can hold a maximum mass of exactly 1 metric ton? A metric ton is 1.000 * 103 kg. Answer in units of people

Balanced forces do not change the motion of an object

Maritime climates can be expected in the middle of large continents. True False

Why do scientists think that our solar system must have formed sometime after nearby supernovae explosions?

A professor sits on a rotating stool that is spinning at 10.0 rpm while she holds a heavy weight in each of her hands. Her outstretched hands are 0.785 m from the axis of rotation, which passes through her head into the center of the stool.