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A football player, starting from rest at the line of scrimmage, accelerates along a straight line for a time of 1.5 s. Then, through a negligible amount of time, he changes the magnitude of his acceleration, he continues in the same direction for another 1.2 s, until he reaches a speed of 3.4 m/s. What is the value of his acceleration (supposed to be constant) through the initial 1.5 s period?
A 10.00 m uniform beam is hinged to a vertical wall and held horizontally by a 5.00 m cable attached to the wall 4.00 m above the hinge, What is the heaviest beam that the cable can support with the given configuration
Find out the vertical component of the reaction force
A solid cube of iron (density = 7.87 g/cm3) has a mass of 88.0 g. What is the resistance between opposite faces of the cube
A spring is extended by 30mm when a force of 1.5 N is applied toit. if the spring was unstretchedbefore applying the mas calculate the loss in the potential energyof the mass
An attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.40 m/s from a height of 1.55 m above the ground. Will the rock reach the top of the wall
a rigid structure consisting of a circular hoop of radius R and mass m, and a square made of four thin bars, each of length R and mass m. What is its angular momentum about that axis
The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.9 mm and is 8.6 cm long. find the average speed of blood in the pulmonary artery
A large positively-charged object with charge q = 3.75 ?C is brought near a negatively-charged plastic ball suspended from a string of negligible mass. what is the angle the string makes with the vertical
An airplane is heading due south at a speed of 600 km/h. If a wind begins blowing from the southwest at a speed of 100km/h (average), Determine the velocity of the plane relative to ground
two scales on a voltmeter which is constructed from a galvanometer measure voltages up to 20 v and 30 v respectively.
An Archer standing on a 15o slope shoots an arrow 20o above the horizontal. Compute how far down the slope does the arrow hit
Nathan walks due east a certain distance and then walks due south twice that distance. He finds himself 15 km from his starting position
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