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The acceleration of gravity is 9.8 meters/sec2.In 1.5 seconds after it's dropped, any object is falling at (9.8 x 2) = 19.6 meters/sec.The mass of the rock makes no difference.
"8 seconds" is not a velocity.
By moving an object higher up. A ball dropped off a 100 foot cliff has higher potential energy than a ball dropped off a 4 foot tall desk.
Since the equation for time=sqrt(2h/g) set 2 seconds for time and 9.8 for gravity so 2=sqrt(2h/9.8) clear the sqrt by squaring both sides 4= 2h/9.8 9.8*4 =2h (9.8*4)/2 = height. now that you have the height, you can do v=distance/time v=height from the equation prior/2 seconds i hope that works..
1,100 j 110 j
False v=1/2 a t2 t=5s a=9.81m/s2 v=122.625 m/s
49
29.4
49
176.4 meters
9.8m/s(5)= 49
,033
The acceleration of gravity is 9.8 m/s2Speed after 3 sec = (9.8 x 3) = 29.4 m/s
The acceleration of gravity is 9.8 meters/sec2.In 1.5 seconds after it's dropped, any object is falling at (9.8 x 2) = 19.6 meters/sec.The mass of the rock makes no difference.
river
Falling
You falling off a cliff.