Correct option is B
The correct answer is (b) Energy
Explanation:
- Work is defined as the product of force and displacement in the direction of force:
Work (W) = Force (F) × Displacement (d) × cosθ - The SI unit of work is Joule (J), which is the same as that of energy.
- Energy is the capacity to do work, and it is also measured in Joules (J).
- Thus, work and energy have the same unit, making option B the correct choice.
Information Booster:
- 1 Joule of Work: When a force of 1 Newton moves an object 1 meter in the direction of force, 1 Joule of work is done.
- Types of Energy:
o Kinetic Energy (KE) = (1/2) mv²
o Potential Energy (PE) = mgh
o Mechanical Energy = KE + PE
- Law of Conservation of Energy: Energy can neither be created nor destroyed; it only transforms from one form to another.
Additional Knowledge:
Force
- SI unit = Newton (N)
- F = m × a (Force = mass × acceleration)
Acceleration:
- SI unit = m/s²
- a =
Momentum :
- SI unit = kg·m/s
- Momentum = mass × velocity (p = m × v)
English
100 Questions
100 Marks
90 Mins
