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Two ants race across a table 67 cm long. One travels at 5.4 cm/s and the other at 3 cm/s. When the first one crosses the finish line, how far behind is the second one? Answer in units of cm.
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you are driving home from college steadily at 65 mph for 130 miles. it then begins to rain and you slow down to 55 mph. you arrive home after driving a total of 3 hours and 20 minutes. how far is your hometown from school? what was your average speed?
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Light-rail passenger trains that provide transportation withe and between cities are capable of modest accelerations. The magnitude of the maximum is typically 1.3 m/s^2 but the driver will usually maintain a constant acceleration that is less than the maximum. A train travels through a congested...
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A spring with spring constant 20.0 N/m hangs from the ceiling. A 460 g ball is attached to the spring and allowed to come to rest. It is then pulled down 7.60 cm and released. What is the time constant if the ball's amplitude has decreased to 2.70 cm after 53.0 oscillations?
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A pendulum is released 55 from its resting position. Is the motion simple harmonic?
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A dog pulls on a pillow with a force of 3.4 N at an angle of 32.1 above the horizontal. What is the x component of this force? Answer in units of N.
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Suppose you had two small boxes, each containing 1.00 {\rm g} of protons.If one were placed on the moon by an astronaut and the other were left on the earth, and if they were connected by a very light (and very long!) string, what would be the tension in the string? Express your answer in newtons...
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Two ants race across a table 50 cm long. One travels at 5.92 cm/s and the other at 3 cm/s. When the first one crosses the finish line, how far behind is the second one?
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cient of kinetic friction between the ice and the puck is 0.05, how far will the puck slide before stopping?
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1. /1 pointsNotesQuestion: ShipPS12 4.E.001. A worker pushes horizontally on a large crate with a force of 295 N, and the crate is moved 5.6 m. How much work was done? J 2. /1 pointsNotesQuestion: ShipPS12 4.E.003. A 4.4 "kilo" bag of sugar is on a counter. How...
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- The Earth’s rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2000 the Earth takes about 0.548 s longer to complete 365 revolutions than it did in the year 1900.
- (a) What is the average angular acceleration of the Earth?
- (b) If this average acceleration remains constant, in what year will the Earths rotation come to rest?
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- A spherical balloon is made from a material whose mass is 3.00-kg. The thickness of the material is negligible compared to the 1.5-m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305-degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19-kg/m^3. Find the absolute pressure of the helium gas
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