This would be false
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4A. PE = MxGxH. (You can consider g as 9.8 / 10m/s as well)
509 J = 12x10xH
509 J = 120xH
H = 509/120
H = 4.24 m
Hope u got the answer....pls rate the answer if it is helpful for u....and I'm sorry I could not understand B part so I didn't do it.
Thank you
Sphere A travels a horizontal distance of (10 m/s) <em>t</em> after time <em>t</em>, while sphere B travels a distance of (5 m/s) <em>t</em>. So sphere B lands on the floor some point between the table's edge and the point X (A).
<span>Buddy, remember one formula.. speed=distance/time
your all problems will be solved.
in this case the answer is 5 km per hr</span>
He compared is to B) Isaac Newton
Isaac Newton has earlier on came up with his formula on gravitation as;
F = GMm/r²
Later on Charles Coulomb came up with his formula on electrostatic force as:
F = kQq/r²
You can see his formula is similar to that earlier formulated by Isaac Newton on gravitation.