A skydiver wants to jump out of a plane and be in free fall while she sketches some motion graphs for a Gr. 11 physics problem. She figures the quickest she can complete the sketches is 17 s. She then wants to open her parachute at the last moment so she can reach a
safe velocity just when she reaches the ground. Generally, a skydiver can walk away unharmed when they hit the ground at 5.6 m/s.
The average acceleration that the parachute can provide is 18.1 m/s [upwards).
How high will the plane be when she jumps? We can assume that she initially has no velocity in the vertical direction.

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point

Amerry-go-round of radius r, shown in the figure, is rotating at constant angular speed. the friction in its bearings is so small that it can be ignored. a sandbag of mass m is dropped onto the merry-go-round, at a position designated by r. the sandbag does not slip or roll upon contact with the merry-go-round. how would you rank the following different combinations of m and r on the basis of the angular speed of the merry-go-round after the sandbag "sticks" to the merry-go-round from largest to smallest. a) m = 10kg, r = 0.25r b) m = 20kg, r = 0.25r c) m = 10kg, r = 0.50r d) m = 10kg, r = 1.0r e) m = 15kg, r = 0.75r f) m = 40kg, r = 0.25r