A 5.00 g bullet is shot through a 1.00 kg wood block suspended on a string 2.00 m long. The center of mass of the block rises a distance of 0.38 cm. Find the speed of the bullet as it emerges from the block, along a horizontal, straight line, if its initial speed is 450 m/s.

A shell is shot with an initial velocity of 17 m/s, at an angle of 0o = 64° with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass (see the figure). One fragment, whose speed immediately after the explosion is zero, falls vertically. How far from the gun does the other fragment land, assuming that the terrain is level and that air drag is negligible? Explosion

A 10.0-g bullet is fired into a 200-g block of wood at rest on a horizontal surface.After impact, the block slides 8.00 m before coming to rest.Ifthe coefficient of friction between the block and the surface is 0.4-00, what is the speed of the bullet before impact? (a) 106 m/s (b) 166 m/s (c) 226 m/s (d) 286 m/s (e) none of those answers is correct

Muskox: In the arctic, male muskoxen compete for the attention of females by butting heads. On a cold day (-16.3 degree F), a young bull spies an older bull 13.9 m away and charges! The two meet in a head-on collision and come to a complete stop. The young bull has a mass of 681 kg and was running at a speed of 9.5 m/s. The older bull has a mass of 654 kg. The collision takes place on an icy patch, so you can ignore friction. (a) What was the speed of the older bull? (b) How many joules of energy were "lost" in this collision?

Consider a system of two particles in the xy plane: m₁ has velocity (3.001 - 2.00ĵ) m/s. This answer has not been graded yet. (a) Plot these particles on a grid or graph paper. Draw their position vectors and show their velocities. (Include the center of mass of the system and its velocity found below. Submit a file with a maximum size of 1 MB.) Choose File No file chosen (b) Find the position of the center of mass (in m) of the system and mark it on the grid. XCM усм Vx,CM Vy,CM = m 2.20 kg is at the location ₁ = (1.00Î + 2.00ĵ) m and has a velocity of (3.00î + 0.500ĵ) m/s; m₂ = 1 m Px Py (c) Determine the velocity of the center of mass (in m/s) and also show it on the diagram. m/s m/s (d) What is the total linear momentum of the system (in kg • m/s)? kg. m/s kg. m/s 3.50 kg is at r₂ = (-4.00î – 3.00ĵ) m and

A 340-g ball B is hanging from an inextensible cord attached to a support C . A 170-g ball A strikes B with a velocity v0 with a magnitude of 1.5 m/s at an angle of 60° with the vertical. Assuming perfectly elastic impact (e= 1) and no friction, determine the height h reached by ball B.

Flying Circus of Physics On August 10, 1972, a large meteorite skipped across the atmosphere above the western United States and western Canada, much like a stone skipped across water. The accompanying fireball was so bright that it could be seen in the daytime sky and was brighter than the usual meteorite trail. The meteorite's mass was about 3.7 × 106 kg; it's speed was about 14 km/s. Had it entered the atmosphere vertically, it would have hit Earth's surface with about the same speed. (a) Calculate the meteorite's loss of energy (as a positive number, in joules) that would have been associated with the vertical impact. (b) Express the energy as a multiple of the explosive energy of 1 megaton of TNT, which is 4.2 × 1015 J. (c) The energy associated with the atomic bomb explosion over Hiroshima was equivalent to 13 kilotons of TNT. To how many Hiroshima bombs would the meteorite impact have been equivalent? (a) Number (b) Number Units Units (c) Number Units

An outlaw cuts loose a wagon with two boxes of gold, of total mass 300 kg, when the wagon is at rest 50 m up a 6.0° slope. The outlaw plans to have the wagon roll down the slope and across the level ground, and then fall into a canyon where his accomplices wait. But in a tree 40 m from the canyon’s cliff wait the Lone Ranger (mass 75.0 kg) and Tonto (mass 60.0 kg). They drop vertically into the wagon as it passes beneath them (Fig.). (a) If they require 5.0 s to grab the gold and jump out, will they make it before the wagon goes over the cliff? The wagon rolls with negligible friction. (b) When the two heroes drop into the wagon, is the kinetic energy of the system of heroes plus wagon conserved? If not, does it increase or decrease, and by how much?

Hunter aims his gun vertically and shoots a 465 g game, which is positioned, on a telephone pole. The bullet has a mass of 60 g and is traveling at a velocity of 450 m/s upwards just before it hits the target. The bullet passes through the target, emerging with a velocity of 295 m/s upwards. How high does the target rise after being hit by the bullet?

At the center of a 47.0 m diameter circular ice rink, a 56.0 kg skater traveling north at 2.60 m/s collides with and holds onto a 59.0 kg skater who had been heading west at 1.05 m/s. How long (in seconds) will it take them to reach the edge of the rink assuming negligible friction and drag?