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A hot-air balloonist, rising vertically with a constant velocity of magnitude v= 5.00 m/s, releases a sandbag at an instant when the balloon is a height h= 40.0 m above the ground . After it is released, the sandbag is in free fall. For the questions that follow, take the origin of the coordinate system used for measuring displacements to be at the ground, and upward displacements to be positive. Take the free fall acceleration to be g= 9.80 m/s^2.
1. Compute the position of the sandbag at a time 1.50 s after its release.
2. Compute the velocity of the sandbag at a time 1.50 s after its release.
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. determine how fast will the disk be turning
At one instant a bicyclist is 40m due east of a park's flagpole, going due south with a speed of 10m/s. Then 30.0s later, the cyclist is 40m due north of the flagpole.
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Estimate the number of water molecules in a 250cm^3 glass of water. Each molecule dimensions is about 3.0 x 10^-10m.
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Two charges, q1 = -80 nC and q2 = +50 nC are placed 3 m apart as shown. The (x,y) coordinates of the charges and two other points in meters are indicated. Find out the electric potential at points A and B
questionone end of a spring is attached to ceiling and it is hanging straight down with a relaxed length l0. it has a
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