per second per second is taken with the context of how an object is changing its acceleration. An object accelerates by speeding up or slowing down. If an object speeds up, it could speed up at a rate of 5 meters per hour, let's say, every second. So after one second, its speed is 5 mph; after two seconds, its speed is 10 mph and so forth. If an object's speed is increasing at 5 meters a second, then its speed is 5 meters per second the first second; 10 meters per second the second second and so forth. We would say the object's acceleration is 10 meters per second / per second.
AnswerIt has to do with speed,the time an object falls from a given height is calculated in seconds per second( it fell in less than a second)Chat with our AI personalities
'ms-2' is the SI derived unit of acceleration. It means that a speed X is changing by 1ms-1 for every second of its acceleration.
Rate at which the speed of the object is changing that is the acceleration.
7 miles per second? Don't you mean 7 meters per second?
You can't convert a distance to a speed. If you mean kilometers per hour, divide that by 3.6 to get meters per second.
That is approximately the acceleration due to gravity, near Earth's surface.