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A battleship that is 6.00 × 107 kg and is originally at rest fires a 1100-kg artillery shell horizontally with a velocity of 575 m/s.
(a) If the shell is fired straight aft (toward the rear of the ship), there will be negligible friction opposing the ship's recoil. Calculate its recoil velocity.
(b) Calculate the increase in internal kinetic energy (that is, for the ship and the shell). This energy is less than the energy released by the gun powder-significant heat transfer occurs.
A hunter wishes to cross a river that is 1.4km wide and flows with a speed of 5km/h parallel to its banks.
A baseball is hit at ground level. The ball reaches its maximum height above ground level 3.0 s after being hit. Then 2.5s after reaching its maximum height, ball barely clears a fence that is 97m from where it was hit. Suppose the ground is level..
Starting from rest, a 40 kg body reaches a speed of 8.0m/s in 2s. Calculate the force acting on the body?
Bill measures the rate at which the clock in sam's spaceship runs and finds that it is 1/3 the rate at which the same clock runs when it is at rest
The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.10 . At this new distance, the speed of the block is observed to be 3.50. Explain by how much work was done by the person who pulled on the cor..
Two stunt drivers drive directly toward each other. At time t=0 the two cars are a distance D apart, car 1 is at rest, and car 2 is moving to the left with speed v0, At what time do the two cars collide?
Two crewmen pull a boat through a lock. One crewman pulls with a force of F1 = 130 N at an angle of = 37° relative to the forward direction of the raft.
An aluminum-alloy rod has a length of 10.006 cm at 23.400°C and a length of 10.024 cm at the boiling point of water, What is the length of the rod at the freezing point of water
Suppose a small boat is at the crest of this wave, 1.5 {rm m} above the equilibrium position. Illustrate what will the vertical position of the boat be 5 seconds later?
Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different directions. Ricardo walks 24.0 in a direction 60.0 west of north. Jane walks 12.0 in a direction 20.0 south of west. They then ..
White light containing wavelengths from 400 nm to 750 nm falls on a grating with 7000 lines/cm. How wide is the first-order spectrum on a screen 2.10 m away.
An 8-g bullet is fired into a 170 g block that is initially at rest at the edge of a table of 1m height. The bullet remains in the block, and after the impact the block lands d = 2.10 m from the bottom of the table. Determine out the initial speed..
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