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A railroad car containing explosive material is initially traveling south at a speed of 4.5 m/s on level ground. The total mass of the car plus explosives is 2.5 104 kg. An accidental spark ignites the explosive, and the car breaks into two pieces, which then roll away along the same track. If one piece has a mass of 1.9 104 kg and a final speed of 1.6 m/s toward the south, what is the final speed of the other piece?
m/s
find out the magnitude of an acceleration
A 17 kg girl slides down a playground slide that is 3.1 m high. When she reaches the bottom of the slide, her speed is 1.3 m/s. what is the coefficient of friction between the girl and the slide
Riders on the "Great American Revolution" loop-the-loop roller coaster wear seatbelts as the roller coaster negotiates its 6.5m -radius loop with a speed of 9.8m/s.
A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0° angle.
On her return trip, she drives half the time at 43.0 and half the time at 74.0. What is Julie's average speed on the way to Grandmother's house. What is her average speed on the return trip
A 18 liter tank of helium is at a pressure of 192 kPa at a temperature of 0 C. A.) How many moles of helium are there in the tank? B.) If the volume of the tank expands to twice its initial volume at constant pressure, what is the new temperature?..
A child and sled with a combined mass of 55.20 kg slide down a frictionless hill that is 7.84 m high at an angle of 26o from horizontal. The acceleration of gravity is 9.80 m/s2. If the sled starts from rest, what is its speed at the bottom of hil..
What is the relationship between the change in Kinetic Energy and the change in Gravitational Potential Energy of a system
A boy uses this string to whirl a 10-kg stone in a horizontal circle of radius 10 m. The boy continuously increases the speed of the stone. At approximately illustrate what speed will the string break?
A uniform disk of mass .53kg and radius 11cm is constrained to rotate on an axis about its center. find the KE attained by the system
If the maximum acceleration that is tolerable for passengers in a subway train is 2.45 m/s2 and subway stations are located 840 m apart, What is the travel time between stations
A piston of radius r = 0.05 m has a stroke within a cylinder of S = 0.2 m. At the bottom of the stoke the cylinder fills with air at T1 = 22.4 C and a pressure of P1 = 100 kPa. What would be the length of the cylinder
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