In Johnny’s Physics class, they were tasked to think and suggest a way to make a stainless-steel spoon float on water using the following materials only –stainless steel spoon, a container of water, and a supply of olive oil. Jim, who is Johnny’s groupmate, suggested to coat the spoon with olive oil. Jim reasoned that this would work since olive oil is less dense than water, the spoon will float on the surface of the water with the olive oil.

Hearing Jim’s explanation, Johnny was doubtful if Jim’s suggestion would really work.

If you were Johnny’s groupmate, using your understanding of the Physics you learned, write an explanation whether Jim’s suggestion would work or not.

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

1point) a skydiver weighing 130 lb (including equipment) falls vertically downward from an altitude of 14,000 ft and opens the parachute after 20 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.85|v|0.85|v| when the parachute is closed and is of magnitude 17|v|17|v| when the parachute is open, where the velocity vv 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. find the speed of the skydiver when the parachute opens. speed is 150.6121788 ft/s find the skydiver's height when the parachute opens. height is 2338.98591 ft find the limiting velocity vlvl after the parachute opens. (think about whether this should be positive or negative.) vl=vl= 7.647 ft/s

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s