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A railroad locomotive with a mass of can exert a force of . At what rate can it accelerate. At what rate can it accelerate by itself? At what rate can it accelerate when pulling a train?
A 30 g ball of clay is thrown horizontally at 20 m/s toward a 1.7 kg block sitting at rest on a frictionless hi surface. The clayts and sticks to the block. What is the speed of the block and clay right after the collision?
As part of a safety investigation, two 1200 {rm kg} cars traveling at 24 {rm m/s} are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.80 {rm s} to stop, and (b) car that hits a..
A torsion pendulum is made from a disk of mass m = 5.7 kg and radius R = 0.67 m, What is the torsion constant of this pendulum
A 0.144 kg baseball is moving towards home plate with a speed of 43.0 m/s when it is bunted. The bat exerts an average force of 6.50 Ã? 103 N on the ball for 1.30 ms, What is the final speed of the ball
A 1200-kg car carrying four 88 kg people travels over a "washboard" dirt road with corrugations 4.3 m apart. The car bounces with highest amplitude while its speed is 13 km/h. While the car stops, and people get out, by how much does the car body ..
An air-track glider attached to a spring oscillates with a period of 1.50s . At t=0s the glider is 4.50cm left of the equilibrium position, obtain the phase constant
A stick of mass m and length L spins with frequency w around an axis, What is the tension in the string, and what is the force that the pivot applies to the stick
Two of the charges are negative and one is positive. Illustrate what work does the electric field have to do as these charges are assembled from infinity, without acceleration?
A child is pushing a merry-go-round. The angle through which the merry-go-round has turned varies with time according to ?(t)=?t+?t3, What is the initial value of the angular velocity
What is the ball's velocity just after leaving the bat if the bat applies an impulse of ?8.4N?s to the baseball
An Oscilloscope grid is calibrated so that one square represents 1-V vertically and 1 msec horizontally. If the height of a square wave pulse display is 6 squares, the width of the pulse is 7 squares, and the cycle of the wave is 16 squares, the a..
The rod is held in the horizontal position shown and then released. Compute the initial acceleration of the mass attached to l1. Assume up is positive and down is negative
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