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High speed stroboscopic photographs show that the head of a 181 g golf club is traveling at 55.4 m/s just before it strikes a 46.5 g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 41.2 m/s. Find the speed of the golf ball just after impact.
A person carries a long pole of mass 10kg and length 3.40 m at the angle of 60 degrees. Find the magnitude of the torque on the pole by reason of gravity.
What type of weather front will be responsible for the following weather forecast? "Cool today with rain becoming heavy by this afternoon. Slightly warmer tomorrow. "Winds south easterly becoming westerly to north westerly by the tomorrow morning."
You drop a stone into a deep well and hear it hit the bottom 2.40 s later. This is the time it takes for the stone to fall to the bottom of the well, plus the time it takes for the sound of the stone hitting the bottom to reach you. Sound travels ..
An 85.1 kg base runner begins his slide into second base while moving at a speed of 5.9 m/s. The coefficient of kinetic friction between his clothes and ground is 0.68. He slides so that he comes to rest just as he reaches the base.
A locomotive is pulling a number of identical wagons along a level track and accelerating. Friction is negligible. Starting from the last wagon, the ratio of the forces between adjacent wagons is.
An object has a kinetic energy of 257J and a momentum of magnitude 21.8 kg·m/s. Find out the speed and the mass of the object.
What is the average speed of a rider on this Ferris wheel.
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, and a power of +1.83 diopters in the close-vision part. Find the near and far points of this person's uncorrected visi..
Describe what are the (a) magnitude and (b) direction of the boat's velocity relative to the ground? (c) How long does the boat take to cross the river?
A 44 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is 5.40 x10^5 N·m2/C. What is the magnitude of the electric field.
A projectile is shot on level ground with a horizontal velocity of 18 m/s and a vertical velocity of 41 m/s, Find the time the projectile is in the air. The acceleration due to gravity is 9.8 m/s2
A 65.0 kg human sprinter can accelerate from rest to 10 m/s in 2.90 s. all through the same interval, a 33 kg greyhound can accelerate from rest to 20 m/s. calculate (a) change in kinetic energy and (b) average power output for each.
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