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1. A 2.5 kg basketball is dropped from the top of a building. Its acceleration is found to be 9.4 m/s^2 as it drops to the ground. What is the force of air friction on the balls as it falls?
2. A 30 kg box sits on the floor. It needs 275 n of force to get it moving. Once it is moving it only takes 225N of force. What are the coefficients of static and kinetic friction?
If an airplane accelerates at 10 m/s2 for 12.3 seconds. How far has the plane traveled in that amount of time
A truck of mass 9312 kg moving at a speed of 68.7 mph has lost its brakes. How far along the incline (?x) does the truck travel before it stops
two charges are placed on the x axis. one charge q1 12.5 microc is at x1 3.0 cm and the other q2 -15 microc is at x2
Galileo's great-great-great grandchild stands at the top of a vertical tower 53.4 m tall with a Chianti bottle, What is the velocity of the bottle as it hits the ground, if it was just dropped from the tower
a pressurized container holds 3 kg of steel immersed in 2 l of water. the pressure inside the container is 300 kpa and
The distance traveled is dependent on the initial velocity, the acceleration and the time of travel. What is the distance traveled during the last second
Explain why Dipole Plate electric field different from parallel plate electric field
A runner of mass m = 37 kg and running at 2.8 m/s runs as shown and jumps on the rim of a playground merry-go-round which has a moment of inertia of 383 kg·m2 and a radius of 2 meters
The body contains many small currents caused by the motion of ions in the organs and cells. Measurements of the magnetic field around the chest due to currents in the heart give values of about 1.0 µG. how large is the current in the heart
This is accomplished using two small rockets, each with 150-N thrust, that are mounted on the rim of the station.
the starter motor of a car engine draws an electric current of 20.0 a from the battery. the copper wire to the motor is
Keli weighs 456 Newton and she is sitting on a playground swing that hand .5 meter above the ground. find how much work was done on the swing by friction
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