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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 v_0. Car 1 begins to move at t=0, speeding up with a constant acceleration a_x. Car 2 continues to move with a constant velocity.
(1) At what time do the two cars collide?
(2) Find the speed of car 1 just before it collides with car 2.
When a turntable rotating at 45 rev/min is shut off, it comes to rest in 20 s. Find the angular acceleration
A rocket is out in space, far away from any planet. At a certain time, it has a mass of 2.8 x 105 kg, most of which is fuel. what is the new mass of the rocket
A 4.19-kg ball of clay is thrown downward from a height of 2.79 m with a speed of 4.21 m/s onto a spring with k = 1490 N/m. Find the maximum compression of the spring
A container holds 1.9 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 7.7x10-3 kg bullet with a speed of 630 m/s
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 126-kg laser sensor which measures the thickness of the ice, find the tension in the cable towing the sensor
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.763 rev/s, Calculate the initial and final kinetic energies for this system.
Suppose two alpha particles were held together so they were just touching. Estimate the electrostatic repulsive force each would exert on the other
A cube of ice is taken from the freezer at -8.9 degrees C and placed in a 93 g aluminum calorimeter filled with 329 g of water at room temperature of 20.0 degrees C. What was the mass of the ice cube
Suppose a formula for gain in heat energy of an object is H = m(A - B), where m = mass and (A - B) is its rise in temperature between A degrees and B degrees (as in #4). Write an expression for the absolute uncertainty, delta-H, in terms of m, del..
wo point charges of equal magnitude are 8.2apart. At the midpoint of the line connecting them, Find the magnitude of the charges
A football player with a mass of 89 kg and a speed of 2.1 m/s collides head-on with a player from the opposing team whose mass is 120 kg. Find the speed of the second player
Suppose in the drawing that I1 = I2 = 13.6 A and that the separation between the wires is 0.0244 m. What is the magnitude of the external field
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