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A BMW M3 sports car can accelerate in third gear from 48.3 km/h (30 mi/h) to 80.5 km/h (50 mi/h) in 3.7 s.
(a) What is the average acceleration of this car in m/s2?
(b) If the car continued at this acceleration for another second, how fast would it be moving?
A 45-kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 25 degrees , At what angle does the crate begin to slide
A golfer, driving a golf ball off the tee, gives the ball a velocity of +31 m/s. The mass of the ball is 0.045 kg, and the duration of the impact with the golf club is 3.45 10-3 s.
A 0.69 book slides on a horizontal table. The kinetic friction force on the book has magnitude 1.2. How much work is done on the book by friction during a displacement of 2.7 to the left
A 60 kg football player is running down the field at a speed of 5 m/s. He is being chased by a 40 kg player who is running at a speed of 6 m/s. How fast is the second player moving
An ideal transformer has 50 turns in its primary and 400 turns in its secondary. 8.0- ac is connected to the primary. What is the power supplied to the primary
Calculate the Resistance of Annealed Copper Wire
Two large equipotent surfaces are flat and parallel and separated by a relatively small distance compared to their size. One surface is at 25 V and the other is at 33 V. The surfaces are 1.25 cm apart. What is the direction of the electric field m..
n = 2.90 mol of Hydrogen gas is initially at T = 370 K temperature and pi = 2.27×105 Pa pressure. What would be the temperature of the gas, if the gas was allowed to adiabatically expand back to its original pressure
a 1.5 kg ball falls onto a floor. just before it strikes the floor its velocity is 12 m/s. the ball bounces up with a velocity of 10 m/s. find the impulse on the ball
A cube of ice is taken from the freezer at -9.5°C and placed in a 105 g aluminum calorimeter filled with 323 g of water at room temperature of 20°C. What was the mass of the ice cube
An erupting volcano violently projects a boulder from a vent at an angle of 40 degrees relative to the horizontal. What was the magnitude of its initial velocity
When an elevator accelerates downward at 1.8m/s2, the floor of the elevator exert a 560N force on a passenger. What is the mass of the passenger
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