KINETIC ENERGY
Problem:
A 1kg mass is moving at 1m/s. What is its kinetic energy?
Answer:
- [tex] { \color{hotpink} \bold{ \frac{1}{2} }} \: \sf \: or \: \: { \color{hotpink} \bold{ 0.5\: J}}\ \\[/tex]
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Formula:
- [tex] \underline{ \boxed{ \sf KE = \frac{1}{2} mv²}}[/tex]
where,
- KE is the Kinetic Energy in joules (J)
- m is the mass in kilograms (kg)
- v is the velocity in meter per second squared (m/s²)
Solution:
- [tex] \sf KE = \frac{1}{2}m {v}^{2} \\ [/tex]
- [tex] \sf KE = \frac{1}{2} \times 1 \times {(1) {}^{2} } \\ [/tex]
- [tex] \sf KE = \frac{1}{2} \times 1 \times {1} \\ [/tex]
- [tex] \sf KE = \underline{ \boxed{ \blue{ \frac{1}{2} }}} \: \: or \: \: \underline{ \boxed{ \blue{ 0.5}}}[/tex]
Hence, the kinetic energy is ½ or 0.5 Joules.
