In which of the following cases will the work done always be negative?

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1. In which of the following cases will the work done always be negative?

1. Gravitational force on a freely falling body2. Frictional force on a sliding object3. Tension in vertical circular motion4. Electrostatic force on a moving electron

2. Which of the following statements are true about work? (i) Work is done if there is displacement (ii) Work is done only if displacement is in the direction of force (iii) Work can be negative (iv) Work depends on both force and displacement

1. (i), (ii), (iv)2. (i), (iii), (iv)3. (ii), (iii), (iv)4. All of the above

3. Which of the following options are scalar quantities? (i) Work (ii) Energy (iii) Force (iv) Power

1. (i), (ii), (iv)2. (i), (ii), (iii)3. (ii), (iii), (iv)4. (i), (iii), (iv)

4. Which of the following can have negative values? (i) Work (ii) Kinetic energy (iii) Potential energy (iv) Power

1. (i), (iii), (iv)2. (ii), (iii)3. (i), (ii), (iii)4. Only (i) and (iii)

5. Which of the following conditions results in positive work done? (i) Force and displacement are in same direction (ii) Force is opposite to displacement (iii) Force has component along direction of displacement

1. Only (i)2. Only (ii)3. Only (iii)4. (i) and (iii)

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In which of the following cases will the work done always be negative?