,at what speed a body of mass 1 kg will have a kinetic energy of 1 J
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√2 is the answer is
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Kinetic energy = K.E = 1J
mass = m = 1kg
speed = v = ?
______________
K.E = mv²/2
K.E × 2 = mv²
1J × 2 = 1kg × v²
(2kgm²/s²) / 1kg = v²
v² = 2m²/s²
v = √2m²/s²
v = (√2)m/s
___________
so at (√2)m/s speed body have kinetic energy of 1J if body moving along strength line .
mass = m = 1kg
speed = v = ?
______________
K.E = mv²/2
K.E × 2 = mv²
1J × 2 = 1kg × v²
(2kgm²/s²) / 1kg = v²
v² = 2m²/s²
v = √2m²/s²
v = (√2)m/s
___________
so at (√2)m/s speed body have kinetic energy of 1J if body moving along strength line .
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