Gravity

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

Why do objects in our solar system not fly off into outer space?

Back

Objects in our solar system are held in orbit by the gravitational pull of the sun, which is due to its large mass.

Front

What is the unit of distance?

Back

The unit of distance is meters (m).

Front

What is the relationship between the length of a pendulum and its period?

Back

The relationship is direct; as the length of the pendulum increases, the period (time taken for one complete swing) also increases.

Front

What is the unit of time?

Back

The unit of time is seconds (s).

Front

If a paperclip and a basketball are dropped from the same height without air resistance, which will hit the ground first?

Back

They will hit the ground at the same time.

Front

What is the formula for calculating gravitational force?

Back

The formula is F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between their centers.

Front

What is mass?

Back

Mass is a measure of the amount of matter in an object, typically measured in kilograms (kg).

Front

What is weight?

Back

Weight is the force exerted by gravity on an object, calculated as weight = mass * gravitational acceleration.

Front

What is gravitational acceleration on Earth?

Back

Gravitational acceleration on Earth is approximately 9.81 m/s².