Newton's 1st & 2nd

Front

What happens to a crate in the back of a truck when the truck strikes a wall?

Back

The crate continues moving forward until it hits something.

Front

What principle explains why a wet bar of soap slides without slowing down?

Back

An object in motion tends to remain in motion in the absence of an unbalanced force.

Front

Why does a phone sitting on a desk remain motionless?

Back

The forces acting on the object are balanced.

Front

What is the formula for acceleration?

Back

Acceleration is defined as the change in velocity per unit time.

Front

What is the unit of mass in the International System of Units (SI)?

Back

The unit of mass is kilogram (kg).

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

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 force, mass, and acceleration?

Back

Force equals mass times acceleration (F=ma).

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its state of motion.