Gravity & Friction

Front

What determines the strength of the gravitational force between two objects?

Back

The strength of the gravitational force depends on the mass of the objects and the distance between them.

Front

What is the attractive force that exists between all objects that have mass?

Back

Gravity.

Front

What type of friction occurs between a surface and moving air?

Back

Fluid friction.

Front

What changes for an astronaut when they go from Earth into space?

Back

Weight.

Front

What measures the quantity of matter in an object?

Back

Mass.

Front

What is the formula for calculating weight?

Back

Weight = Mass × Gravitational Acceleration (W = m × g).

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from moving.

Front

What is sliding friction?

Back

Sliding friction is the force that opposes the motion of two surfaces sliding past each other.

Front

What is the role of gravity in the solar system?

Back

Gravity keeps planets in orbit around the sun and moons in orbit around planets.