1.) A 95-meter long train begins uniform acceleration from rest. The front of the train has a speed of 25 meter/second when it passes a railway worker who is standing 180 m from wherer the front of the train started. What will be the speed of the last car as it passes the worker.
2.) A stone is dropped from the roof of a high building. A 2nd stone is dropped 1.50 seconds later. How far apart are the stones when the 2nd one has reached a speed of 12.0 meters/second.
3.)Two students are asked to find the height of a particular building using a barometer. Instead of using the barometer as an altitude-measuring device , they take it to the roof of the bulding and drop it off, timing its fall. One student reports a fall time of 2.0 sec., and the other, 2.3 sec.. How much difference does the 0.3 sec make for the estimates of the building's hieght.
2006-09-23 05:01:31 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Weather
No one feels like doing your own homework. Either we're not in school anymore or we have our own.
Do it yourself. You might learn something.
2006-09-24 13:49:05 · answer #1 · answered by Isles1015 4 · 0⤊ 0⤋
Here is one better then that?.. If the space shuttle returns in the atmosphere in the night time hours, instead of the daylight when the sun has heated the upper layers of the atmosphere. How much will this reduce the heat on the heat tiles of the shuttle in terms of degrees in temps if any?..
2006-09-23 14:35:22 · answer #2 · answered by Anonymous · 0⤊ 0⤋
This is basic Physics !!!!!!!!!!!!!!!!!
2006-09-23 06:43:17 · answer #3 · answered by ag_iitkgp 7 · 0⤊ 0⤋