PLZ HELP ME I CANT THINK ANYMORE IVE SOLVING THOSE SINCE I WOKE UP THEY WONT FINISH
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a) kinetic energy =1/2×m.v×v
=1/2×10×144 =720
b)if speed =6 then kinetic energy =
=1/2×10×36 =180
calculate the % - 180/720×100% =25%
therefore 75% energy is reduced.
=1/2×10×144 =720
b)if speed =6 then kinetic energy =
=1/2×10×36 =180
calculate the % - 180/720×100% =25%
therefore 75% energy is reduced.
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