Abig clumsy cat having a mass of 4.00 kg falls from a tree branch for a distance of 2.00 m. in the air it rights itselfand hits the ground with outstretched legs decelerating to a stop over a distance of 12.0 cm (from rest on the branchat the top, to crouched at rest on the ground the total distancecovered is 2.00 m + 12.0 cm). assuming a constantdeceleration over the 12.0 cm, what force (in n) does the cat exerton the ground?

Askydiver weighing 140 lb (including equipment) falls vertically downward from an altitude of 19,000 ft and opens the parachute after 18 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.55|v| when the parachute is closed and is of magnitude 14|v| when the parachute is open, where the velocity v is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. (a) find the speed of the skydiver when the parachute opens. (b) find the distance fallen before the parachute opens. (c) what is the limiting velocity vl after the parachute opens? (d) determine how long the sky diver is in the air after the parachute opens. (e) plot the graph of velocity versus time from the beginning of the fall until the skydiver reaches the ground.

What is the measure of a change in an objects velocity?

Difference between series and parallel circuits