A. THINK TANK! Write True if the statement is correct, but if it's False, change the underlined word or group of words to make the whole statement true. Write your answers on your science notebook. 1. Mechanical energy consists of two types, the potential energy and kinetic energy. 2. Potential energy is energy due to its high velocity. 3. Kinetic energy is also termed as stored energy. 4. Given that PE is 50 J and KE is 10 J, then the total ME is 40 J. 5. ME is the product of PE and KE. 6. The object's kinetic energy is transformed into potential energy or vice versa. 7. When Potential Energy of a pendulum decreases as it swings down, Kinetic Energy increases as it gains speed. 8. At a point, Potential Energy is zero while Kinetic Energy is at its maximum. 9. When the vehicle is moving, there is a gain of potential energy. 10. When the vehicle is at rest, it has kinetic energy.
Answer (1)
1. True – Mechanical energy consists of two types, potential energy and kinetic energy. ✅2. False – Potential energy is energy due to its position or stored energy. ❌ (Change "high velocity" to "position or stored energy")3. False – Kinetic energy is the energy of motion, not stored energy. ❌ (Change "stored energy" to "energy of motion")4. False – The total mechanical energy (ME) is the sum of PE and KE:ME=PE+KE=50J+10J=60J(Change "40 J" to "60 J")5. False – ME is the sum of PE and KE, not the product. ❌ (Change "product" to "sum")6. True – The object's kinetic energy is transformed into potential energy or vice versa. ✅7. True – When Potential Energy of a pendulum decreases as it swings down, Kinetic Energy increases as it gains speed. ✅8. True – At a point, Potential Energy is zero while Kinetic Energy is at its maximum (e.g., lowest point in a swing). ✅9. False – When the vehicle is moving, there is a gain of kinetic energy, not potential energy. ❌ (Change "potential energy" to "kinetic energy")10. False – When the vehicle is at rest, it has potential energy, not kinetic energy. ❌ (Change "kinetic energy" to "potential energy")
