please help me...thank u very much!!
2006-07-15 17:21:08 · 6 answers · asked by gen 2 in Science & Mathematics ➔ Physics
.777 m/s
15.555 m
If you need significant digits the answers might need to be adjusted some.
2006-07-15 17:25:46 · answer #1 · answered by LilMikey 3 · 0⤊ 0⤋
that is easy, just needs a little thinking
average speed = distance / time = 2.8 km / 60 min = (2.8 * 1000 m )/ (60 * 60 s) = 2800 m / 3600 s = 7/9 m/s
solve the next part by urself
2006-07-16 00:27:52 · answer #2 · answered by ___ 4 · 0⤊ 0⤋
2800 meters over 60 times 60 which is 3600
divide that and then muliply that answer by 20 to see what distance in 20 seconds
2006-07-16 00:26:35 · answer #3 · answered by FadingMemory 1 · 0⤊ 0⤋
his speed is .77m/s and he travels 15.55 meters in 20 seconds
2800/60/60=.77m/s .77x20=15.55
2006-07-16 00:27:16 · answer #4 · answered by Democestes 3 · 0⤊ 0⤋
1_ 2.8km=2800m & 60 min=3600sec
so av.speed=d\t=2800\3600_Ans
2_3600=2800
1=2800\3600
so,20sec=2800\3600*20_Ans
2006-07-16 00:49:07 · answer #5 · answered by Harry 1 · 0⤊ 0⤋
.77777777777777777777777777777778 m/s
15.5555555555555555555555555555556 m
2006-07-16 01:30:54 · answer #6 · answered by chem-o-phobic 2 · 0⤊ 0⤋