Question : Power exerted by an object moving in a straight line is equal to force multiplied by ______.
Option 1: displacement
Option 2: velocity
Option 3: work
Option 4: acceleration
Correct Answer: velocity
Solution : The correct option is velocity.
The power exerted by an object moving in a straight line is equal to force multiplied by velocity. Mathematically, power (P) is defined as the product of force (F) and velocity (v): P=F×v
Power is the rate at which work is done or energy is transferred, and it depends on both the force applied to the object and the speed at which it is moving.
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Question : Which of the following is an INCORRECT match?
Option 1: Pressure – Pascal
Option 2: Volume – metre
Option 3: Force – Newton
Option 4: Work done – joule
Question : "Impulse" can be defined as:
Option 1: the force acting on a body for a very long time.
Option 2: the work done by a body for a short time.
Option 3: the force acting on a body for a short time.
Option 4: the temperature acting on a body for a short time.
Question : Once a satellite has been launched into orbit, the only force governing its motion is the force of______________.
Option 1: friction
Option 2: elasticity
Option 3: gravity
Option 4: fuel driven
Question : Observing the motion of objects on an inclined plane______deduced that objects move with a constant speed when no force acts on them.
Option 1: Michael Faraday
Option 2: Johannes Kepler
Option 3: Galileo
Option 4: Archimedes
Question : Which of the following intermolecular forces is also called a London force?
Option 1: Dispersion forces
Option 2: Dipole-induced dipole forces
Option 3: Dipole-dipole forces
Option 4: Hydrogen bond forces
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