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1.) Force F pulls a box having 4-kg mass from point A to B. If the friction constant between surface and the box is 0.3; find the work done by F and work done by resultant force.
2.) A mass is dropped from a height of 4-m onto a spring with a constant of 120 N/m. If the spring compresses by a maximum amount of 1.25-m, what is the mass of the object?
3.) A 2,100-kg car starts from rest at the top of a 5-m long driveway that is inclined at 20.0 degrees with the horizontal. If an average friction of 4,000-N impedes the motion, find the speed of the car at the bottom of the driveway.
A runner in a race takes 2.7 seconds to go from the 40 meter mark to the 70 meter mark. What is the runner's speed (in m/s)
Spiderman's webbing has a cross sectional area of A = 10^-6 m^2. The Young's modulus of the silk is Y = 200 x 10^10 Pa, and has a breaking strength of 1 x 10^9 Pa. How far will it have stretched before breaking
How many Galilean moons are there, and why are they called Galilean? What is the total number of moons of the terrestrial planets? How many moons does Mars have, and what are their names?
After walking for 6.0 min on the way to school, a child discovers that her loonie is missing and there is a hole in her pocket.
Gas in a container is at a pressure of 1.4 atm and a volume of 3.0 m3. Determine what is the work done on the gas
Two teams of nine members each engage in a tug of war. The first team's members have average masses of 70 kg and exert average forces of 1350 N horizontally, What is the acceleration of the two teams
A sealed cubical container 11.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 24.0°C
What is the stopping distance of the car, as measured from the point where the driver first notices the red light?
Find the change in momentum of a 1140kg car that increases its speed from 4.5 m/s to 18.0 m/s in a time of 19s while travelin in the same direction
A biologist is investigating the behavior of 2 ants, Alfredo and Bernice. The graph below shows the position of the ants as a function of time as the ants move along the celery stalk.
A merry-go-round with moment of inertia of 550 kg m 2 has a boy of mass 45 kg riding in the center of the merry-go-round with an initial angular velocity of 9 revolutions per minute. The boy then travels from the center to the outside rim of the m..
A handheld digital multimeter (DMM) is used to measure the portential difference accross the first resistor by placing probe leads at each end of this resistor.
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