Newton's laws

Front

What is the definition of density?

Back

Density is the mass per unit of volume of a substance.

Front

What is used to reduce friction?

Back

Lubricants are used to reduce friction between surfaces.

Front

According to which law does an object apply an equal force in the opposite direction when a force is applied to it?

Back

Newton's 3rd law states that for every action, there is an equal and opposite reaction.

Front

Why is it important to specify a reference direction when discussing forces?

Back

Forces have both magnitude and direction, so specifying a reference direction helps to understand the force's effect.

Front

What is the value of Earth's gravity?

Back

Earth's gravity is approximately 9.8 meters per second squared.

Front

What does Newton's 1st law state?

Back

Newton's 1st law states that an object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by a net external force.

Front

What is the formula for calculating force?

Back

Force is calculated using the formula: Force = Mass x Acceleration (F = m*a).

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object, calculated as Weight = Mass x Gravity.

Front

What is the significance of the net force?

Back

The net force is the total force acting on an object, determining its acceleration and motion.