Semester 1 exam review Part 2

Front

What is gravitational force?

Back

The force of attraction between two masses, which depends on their masses and the distance between them.

Front

What happens to gravitational force if the masses are doubled and the distance is also doubled?

Back

The gravitational force remains the same.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented as p = mv.

Front

What is the principle of conservation of momentum?

Back

In a closed system, the total momentum before an event is equal to the total momentum after the event.

Front

What is the normal force?

Back

The normal force is the force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.

Front

How do you calculate momentum?

Back

Momentum (p) is calculated using the formula p = mass (m) × velocity (v).

Front

What is centripetal force?

Back

Centripetal force is the force that keeps an object moving in a circular path, directed towards the center of the circle.

Front

What role does gravitational force play in centripetal motion?

Back

Gravitational force can act as the centripetal force that keeps planets in orbit around the sun.

Front

What is the relationship between mass and acceleration in Newton's second law?

Back

According to Newton's second law, force equals mass times acceleration (F = ma).

Front

What is the significance of equal and opposite momentum in collisions?

Back

In collisions, the momentum lost by one object is gained by another, ensuring total momentum is conserved.