Learn about acceleration…
Acceleration is the change in an object’s velocity over time. It is calculated using the formula: acceleration = change in speed/time interval.
This formula will be useful in your fuel cell car science fair projects.
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The Formula for Calculating Acceleration |
Tips for Figuring Out the Formula for Calculating Acceleration
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As you wrote, acceleration is change is velocity of an object over time, so I have confusion: Why acceleration of an object dropping down towards earth is constant i.e. 9.8 m/s^2 while we can observe that its speed is constantly growing up while it’s going down towards earth.
Brian has highlighted a very good point in his comment, but actually there are various other factors which effect the speed of a falling object like air pressure, humidity level in the air and so even if gravitational force remains constant (9.8m/s^2), we still observe a change in speed.
Actually any object dropping to the earth depends upon the gravitational force which is constant and hence the acceleration of any object falling down will be same. Even if we throw one object down by force and another one is freely falling, the downward acceleration of both will be same.
Would this be same effect as driving into the wind. I accelerate more when into wind than when I am going with the wind. Whereas when it cross way the control is more in the steering. Interesting and thought provoking.