IGCSE U2 and U3 Forces motion and pressure

The atmosphere exerts pressure due to the:

• a) Weight of gases
• b) Temperature of gases
• c) Volume of gases
• d) Density of gases

An object floats when its:

• a) Density is greater than the surrounding fluid
• b) Density is less than the surrounding fluid
• c) Volume is greater than the surrounding fluid
• d) Volume is less than the surrounding fluid

A fluid is a substance that:

• a) Has a fixed volume
• b) Has a fixed shape
• c) Takes the shape of its container
• d) Does not flow

Moment is the:

• a) Force exerted by an object
• b) Distance between two points
• c) Turning effect of a force
• d) Rate of change of velocity

Pressure in a column of fluid depends on the:

• a) Volume of the fluid
• b) Temperature of the fluid
• c) Depth of the fluid
• d) Density of the fluid

Resultant moment is the:

• a) Total force acting on an object
• b) Total distance traveled by an object
• c) Combined turning effect of all forces
• d) Speed of an object

An object sinks when its:

• a) Density is greater than the surrounding fluid
• b) Density is less than the surrounding fluid
• c) Volume is greater than the surrounding fluid
• d) Volume is less than the surrounding fluid

Acceleration is the:

• a) Change in velocity per unit time
• b) Distance covered per unit time
• c) Force exerted on an object
• d) Rate of change of momentum

Braking distance is the distance traveled by a vehicle:

• a) While accelerating
• b) While turning
• c) While braking
• d) While cruising

The center of mass of an object is the point where:

• a) It experiences the most pressure
• b) Its weight is concentrated
• c) Its density is highest
• d) Its volume is greatest