Regents Physics Intro to Physics Questions Review

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv, where p is momentum, m is mass, and v is velocity.

Front

What happens to momentum in a closed system during a collision?

Back

In a closed system, the total momentum before the collision is equal to the total momentum after the collision, according to the law of conservation of momentum.

Front

What is the approximate diameter of an atom?

Back

The diameter of an atom is approximately 1 × 10^-10 meters.

Front

What is the significance of significant figures in measurements?

Back

Significant figures indicate the precision of a measurement, reflecting the certainty of the digits reported.

Front

How do you calculate the resultant velocity of an object with perpendicular components?

Back

To calculate the resultant velocity, use the Pythagorean theorem: v_resultant = √(v_x² + v_y²), where v_x and v_y are the perpendicular components.

Front

What is the formula for calculating force?

Back

Force is calculated using the formula F = ma, where F is force, m is mass, and a is acceleration.

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object, calculated as W = mg, where W is weight, m is mass, and g is the acceleration due to gravity.

Front

What is the approximate width of a student's finger in meters?

Back

The width of a student's finger is approximately 1 × 10^-2 meters.

Front

What is the diameter of a typical dinner plate?

Back

The diameter of a typical dinner plate is approximately 2 × 10^-1 meters.

Front

How do you determine the direction of a resultant vector?

Back

The direction of a resultant vector can be determined using trigonometric functions, such as sine and cosine, based on the components of the vector.