Question #2983d
1 Answer
Mar 26, 2017
The ball weighs
Explanation:
Kinetic energy is found by the formula:
#KE = 1/2mv^2#
We know that
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Now, let's plug in everything we know and solve for
#1000 color(white)".""J" = 1/2 M * (5 color(white)"." "m/s")^2#
#1000 color(white)"." J = 1/2 M * 25 color(white)"." "m"^2"/s"^2#
#40 color(white)"." "kg" = 1/2 M#
#80 color(white)"." "kg" = M#
Final Answer