howw do you find the acceleration of an object if only given the speed?
2006-10-02 15:01:42 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
ok uh... maybe having the probleme would help.
According to federal safety standards, children's bikes must be able to stop a rider and bike (total mass = 72 kg) which are moving at 42 kilometers per hour within 3.0 seconds. Make sure you give your answer in significant figures.
2006-10-02 15:37:20 · update #1
Acceleration due to (Earth's) gravity is assumed to be 9.8 m / s^2
Would that fit with the problem?
2006-10-02 15:12:36 · answer #1 · answered by Warren914 6 · 0⤊ 1⤋
If you are only given the speed at a given moment, then you cannot know anything about the acceleration. Acceleration is the rate of change of speed or velocity. You have to know something about the change in speed from one point in time to another. You can know this from distance traveled per unit time per unit time, or you can know this from change in speed per unit time. BUT, given only the speed, you cannot know anything else.
2006-10-02 15:22:26 · answer #2 · answered by Jack 7 · 0⤊ 0⤋
you have to know the time. then divide VELOCITY by time.
2006-10-02 15:03:24 · answer #3 · answered by stitchfan85 6 · 1⤊ 0⤋