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An object moves with constant acceleration 4.80 m/s2 and over a time interval reaches a final velocity of 12.6 m/s. (a) If its initial velocity is 6.3 m/s, what is its displacement during the time interval? (b) What is the distance it travels during this interval? (c) If its initial velocity is -6.3 m/s, what is its displacement during the time interval? (d) What is the total distance it travels during the interval in part (c)?
Kelli weighs 417 N, and she is sitting on a playground swing that hangs 0.44 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.00 m above the ground. Imagine that air resistance is negligible.
The heat of vaporization of ethyl alcohol is about 200 cal/g. If 2.3 kg of it were allowed to vaporize in a refrigerator, how many grams of ice will be formed from 0°C water.
A 0.6 kg block of ice is sliding by you on a very slippery floor at 3.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.0035 seconds.
The rocket's speed was measured to be 1.49 c. The rocket's rest length is 380m. An observer flying through measured the rocket to be 199m long.
What is the tension in the cord in the original situation. A cube of ice is taken from the freezer at -9.3°C and placed in a 95 g aluminum calorimeter filled with 297 g of water at room temperature of 20°C. The final situation is observed to be all..
A child attempts to drink water by a 100 long straw but finds that water rises only 75 .By how much has the child reduced the pressure in her mouth below atmospheric pressure.
A person driving her car at 49 km/h approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection .
How far does the object compress the spring if same experiment is performed on the moon, where g = 1.63 m/s2 and air resistance is neglected.
If the bullet has a mass of 21.5 and a speed of 310 , how high would the block rise into the air after the bullet becomes embedded in it.
A professor's office door is 0.9 wide, 2.0 high, and 4 thick; has a mass of 25; and pivots on frictionless hinges. A "door closer" is attached to door and top of the door frame.
An object falls because of gravity at a rate of -9.80 m/s2 (- sign is indicative of a downward direction) for 10.00 Seconds. If it starts from rest (vo= 0) and its position starts from do= 0.0, where is it 10.00 Seconds later.
2-information centers used for retail credit authorization are located in 2-different major population centers, which are separated from each other through a large zone of very little population.
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