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A boy throws a ball at an angle of 45 degrees with the horizontal and with an initial velocity of 30 feet per second towards a building 35 feet away. The ball leaves the boy's hand from a height of 3 feet above the ground. Determine if the ball will reach the building with an explanation.
From what height did the student fall? Assume that the only force acting on him throughout the collision is that as a result of the ground.
The coefficient of friction between a block of mass m1= 3Kg and the surface is mu=.4. The system starts from rest. What is the speed of the ball of mass m2=5Kg when it has fallen a distance of h=1.5m?
q1. two 18 cm diameter charged disks face each other 25 cm apart. both disks are charged to - 30 nc. what is the
Fish are hung on a spring scale to decide their mass (most fishermen feel no obligation to report the mass truthfully). How far apart are the half-kilogram marks on the scale? What is the mass of a fish that stretches the spring 5.50 cm?
The best sprinters can run a 100 m in 10.0 s. A 72.0 kg sprinter accelerates uniformly for the first 53.0 m to reach top speed, What is the average horizontal component of force exerted on his feet by the ground during acceleration
A speeder is pulling directly away and increasing his distance from a police car that is moving at 25 m/s with respect to the ground. Obtain the speeder speed with respect to the ground
Air at 13 psia and 20°F enters an adiabatic diffuser steadily with a velocity of 600 ft/s and leaves with a low velocity at a pressure of 14.5 psia. The exit area of the diffuser is 5 times the inlet area. Determine
To make a bounce pass, a player throws a 0.60 kilogram basketball toward the floor. find what impulse delivered to it by the floor
A diffraction grading has 6000 lines per centimeter ruler on it. What is the angular separation between the second and third orders on the same side of the central
suppose that both cars start at the same point, how much sooner does the faster car arrive at a destination 35 km away.
Consider the ballistics pendulum experiment. If M=1kg and m=0.1kg, and the velocity of the bob-ball system right after the collision is Vf=2m/s, what was the initial velocity of the ball before it hit the bob
In a particular region of Earth's atmosphere, the electric field above Earth's surface has been measured to be 144 N/C downward at an altitude of 240 m and 177 N/C downward at an altitude of 390 m
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