Answer:
180m/s
Explanation:
Kinetic energy = ½ mv²
Where m= mass = 0.041kg
V= velocity =?
K. E = 660J
Therefore
K. E = ½ mv²
Input values given
660 = ½ × 0.041 × v²
Multiply both sides by 2
660×2 = 2 × 1/2 × 0.041 × v²
1320 = 0.041v²
Divide both sides by 0.041
1320/0.041 = 0.041v²/0.041
v² = 32195.12
Square root both sides
Sq rt v² = sq rt 32195.12
V = 179.5m/s
V is approximately = 180m/s
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