Force/Motion/Gravity

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, proportional to their masses and inversely proportional to the square of the distance between their centers.

Front

True or False: Any object with mass has gravity.

Back

True

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, which does not change regardless of location, while weight is the force exerted by gravity on that mass, which can change depending on the gravitational field.

Front

What is the unit of measurement for mass?

Back

The unit of measurement for mass is kilograms (kg).

Front

What is the unit we use to measure acceleration?

Back

The unit for measuring acceleration is meters per second squared (m/s²).

Front

What does it mean when forces are unbalanced?

Back

Unbalanced forces occur when the net force acting on an object is not zero, causing the object to accelerate in the direction of the net force.

Front

What is the formula for calculating net force?

Back

Net force is calculated by summing all the forces acting on an object, taking into account their directions: F_net = F1 + F2 + ... + Fn.

Front

When two forces act in opposite directions, how do you determine the stronger force?

Back

To determine the stronger force, you need to subtract the smaller force from the larger force.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion, which is directly related to its mass.

Front

What is the relationship between force, mass, and acceleration?

Back

The relationship is described by Newton's second law of motion: F = m * a, where F is force, m is mass, and a is acceleration.