FPSC MCQs

Inertia causes an object to remain at rest or in uniform motion unless acted on.
Greater mass generally means greater inertia.

Their bodies tend to continue moving forward when the bus stops.
This is an example of inertia of motion.

Newton's third law describes paired interaction forces.
Each force is matched by an equal force in the opposite direction.

The rocket pushes exhaust gases downward.
The gases exert an equal and opposite force on the rocket.

Pressure is force distributed over an area.
The same force produces greater pressure on a smaller area.

A sharp edge concentrates force over a small area.
This creates greater pressure and makes cutting easier.

Pressure is measured in pascals.
One pascal equals one newton per square metre.

Pascal's law states that pressure applied to a confined fluid is transmitted equally.
This allows force multiplication in hydraulic brakes.

Water exerts an upward buoyant force on immersed objects.
Floating occurs when this force balances the object's weight.

Archimedes' principle relates buoyant force to displaced fluid.
The upward force equals the weight of the displaced fluid.

Average speed is total distance divided by total time.
Thus, 120 ÷ 2 = 60 km/h.

A ship contains large air-filled spaces.
Its total mass spread over its volume gives an average density below water.