8th Grade Semester 1 Exam

Front

In physics, weight is measured in _____?

Back

Newtons

Front

What is the formula to calculate force?

Back

Force = Mass x Acceleration (F = m*a)

Front

What is friction?

Back

Friction is the force that opposes motion between two surfaces in contact.

Front

What does Newton's 1st Law state?

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 acceleration?

Back

Acceleration is the rate of change of velocity of an object.

Front

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

Back

Newton (N)

Front

What is inertia?

Back

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

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity (p = m*v).

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 does a steeper slope on a distance-time graph indicate?

Back

A steeper slope indicates a higher speed.