review mid term part 2

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 on by an outside force.

Front

What is the formula for calculating acceleration?

Back

Acceleration = Force / Mass.

Front

What is average speed?

Back

Average speed is the total distance traveled divided by the total time taken.

Front

What energy transformation occurs when a match is struck?

Back

The chemical energy stored in the match changes to thermal energy and light energy.

Front

How do you calculate the average speed of a car that travels 150 kilometers in 3 hours?

Back

Average speed = Total distance / Total time = 150 km / 3 h = 50 km/h.

Front

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

Back

Newton (N).

Front

What is the mass of an object if a force of 500 N produces an acceleration of 10 m/s²?

Back

Mass = Force / Acceleration = 500 N / 10 m/s² = 50 kg.

Front

What does it mean for a car to travel at a constant speed?

Back

It means the car covers equal distances in equal intervals of time without speeding up or slowing down.

Front

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

Back

According to Newton's second law, Force = Mass x Acceleration.

Front

What happens to the motion of an object if no net force acts on it?

Back

The object will maintain its current state of motion, either at rest or moving at a constant velocity.