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Earn +20 ptsQ: What is the average speed off 200km in 2.5 hours?
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It takes 6 s for a stone to fall to the bottom of a mine shaft. How deep is the shaft?
Ignoring air resistance, or bouncing off the sides of the shaft on the way down ...-- Speed when you let it go = 0-- Speed after 6 seconds = 6 G = 58.84 meters per second-- Average speed = 1/2 (0 + 58.84) = 29.42 meters per second-- In 6 seconds, at an average speed of 29.42 meters per second,it fell 176.5 meters.
How many hours and minnutes of day light is there from733am 524pm?
12 hours if you round it off
How long would it take to drive a billion miles?
The time taken will depend on the speed at which the journey is undertaken. At the UK motorway speed limit, and travelling non-stop would take approx 1630 years. This assumes, off course, that the average speed is maintained despite traffic, fuelling stop, comfort stops, stops to allow new drivers to replace dead ones, car repairs and so on.
Why should rockets lift off to a speed more than 25000 miles?
NGANGA
Suppose a rock is dropped off a cliff with an initial speed of 0 ms What is the rock's speed after 3 seconds in ms if it encounters no air resistance?
29.4
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