PoE Review I (PLTW Principles of Engineering)

Front

What is pressure?

Back

Pressure is defined as the force applied per unit area on a surface. It is measured in units such as Pascals (Pa) or N/cm².

Front

What is the formula for calculating pressure?

Back

The formula for calculating pressure is: pressure = force / area.

Front

What units are used to measure acceleration?

Back

Acceleration is measured in meters per second squared (m/s²).

Front

What is the horizontal acceleration of a projectile?

Back

The horizontal acceleration of a projectile is 0 m/s².

Front

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

Back

According to Newton's second law, the relationship is given by the formula: force = mass × acceleration.

Front

How do you calculate the force exerted by an object?

Back

Force can be calculated using the formula: force = mass × acceleration.

Front

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

Back

The unit of force in the SI system is the Newton (N).

Front

What is the significance of 9.8 m/s² in physics?

Back

9.8 m/s² is the approximate acceleration due to gravity on the surface of the Earth.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, measured in kilograms (kg), while weight is the force exerted by gravity on that mass, measured in Newtons (N).

Front

What is the formula for calculating weight?

Back

Weight can be calculated using the formula: weight = mass × gravity (where gravity is approximately 9.8 m/s²).