Suppose a treadmill has an average acceleration of 4.7 * 10^ -3 m/s^2
a) How much does its speed change after 5.0 min?
To find this I used the formula a=v/t (Acceleration = velocity / time) and when I solved it I got 1.41 m/s.
b) If the treadmill initial speed is 1.7 m/s, what will its final speed be?
In this second question I don't even know where to start. Can someone help me please?
Thank You! :D
2007-09-11 14:17:42 · 6 answers · asked by . 6 in Science & Mathematics ➔ Physics
You already solved the problem. You found that the speed change in the 5 minute interval is 1.41 m/s. All you have to do is add that to the initial speed, which is 1.7, to find out what the final speed will be (3.11 m/s).
2007-09-11 14:22:43 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Since you know the difference in speed after 5 minutes, the final speed will be 1.7 + 1.41 = 3.11 m/s
The complete formula is:
v = u + at
v = Final speed
u = Initial speed
a = acceleration
2007-09-11 14:28:26 · answer #2 · answered by Savvy 2 · 0⤊ 0⤋
All you need to do is use the formula v(f) = v(i) + at, where:
v(f)= final velocity
v(i)= initial velocity
a = acceleration
t = time
If you assume that the treadmill will reach its final speed in 5 minutes (300 sec)......
v(f) = 1.7 m/s + (.0047 m/s^2)(300s)
you get a final answer of 3.11 m/s.
2007-09-11 14:35:24 · answer #3 · answered by justin 1 · 0⤊ 0⤋
After all this time, you'd feel the acceleration and blow a heart valve. I'm just tired thinking of such experince.
2007-09-11 14:22:07 · answer #4 · answered by Mr. Wizard 7 · 0⤊ 0⤋
If we assume the bikes are traveling towards each other, they will meet in one hour. Since the bee flies at 30 km/hr, it will travel 30 km in the one hour it takes the bikes to meet.
2016-05-17 10:46:39 · answer #5 · answered by ? 3 · 0⤊ 0⤋
do you go to WW school
2007-09-11 15:36:40 · answer #6 · answered by I go to WW 1 · 0⤊ 0⤋