4800 feet
89 feet in 0.8 sec. 890 feet in 8 sec Hence, in one sec : 890/8 = 111.25 feet/sec
157/360 ft/sec = 0.436 ft/sec
That will depend on the speed you are traveling with. At 60 mph= 88 feet/sec = 9.09 sec = 800 feet at 70 mph= 102 feet/sec =7.84 sec = 800 feet
The fact that it is a quarter is totally irrelevant. It will hit the ground at a speed of 19.6 feet/sec.
First change mi/hr into ft/sec. There 1 mi = 5280 ft and 1 hour = 3600 sec. 6 mi/hr = 6 * (5280 ft / 3600 sec) = 8.8 ft / sec To figure out how fast you travel any distance you divide the distance by time it took you. distance / time = speed 205 ft / time = 8.8 ft / sec Solving for time: time = 205 ft / (8.8 ft / sec) time = 23 sec
Force = Mass x Acceleration Initial speed of car = 0, Final speed = 40 feet/sec in time 2 seconds Acceleration = (v-u)/t = (40 - 0)/2 = 20 feet/sec/sec Force = 3500 x 20 = 70000 pounds/sec/sec
10 with 20 zeroes after it, I think. (km per sec)
X-rays are a type of electromagnetic radiation, and therefore travel at the speed of light. About 300,000 km/sec.
50 ft/sec or 34.1 mph
40 feet in 0.5 seconds = 80 feet in 1 sec ie 80 fps
2 km is equivalent to 2,000 meters. So divide 2,000 by the students speed of 5m/sec. 2,000/5 = 400. So it takes him 400 sec, or 6 2/3min, or 6min 40sec.
At the moment, Firefox is downloading here and the speed is indicated in KB/sec-- read kilobytes per second. Your test speed of 4mbs is most likely 4 megabits per second. For you too, Firefox is most likely showing the speed in kilobytes per second; when you read the speed, whether it's shown in upper case or lower case make all the difference. Thus 300 kilobytes per second (300KB/sec) translates to 2 400 kilobits per second (2 400 kb/sec) since one byte consists of 8 bits. 2 400 kb/sec is 2.4 mb/sec or 2.4 mbs to use your notation and it's 60% of your test speed. This may be quite reasonable.