Review for 1st semester physics final

Front

What is a scalar?

Back

A scalar is a quantity that has magnitude only, without direction.

Front

What is the formula to calculate net force?

Back

Net force (F) = mass (m) × acceleration (a).

Front

What is the total displacement?

Back

Displacement is the shortest distance from the initial to the final position, considering direction.

Front

What happens to the vertical velocity of a projectile launched horizontally?

Back

The vertical velocity increases due to gravity as it falls.

Front

What is centripetal acceleration?

Back

Centripetal acceleration is the acceleration directed towards the center of a circular path.

Front

How do you calculate centripetal acceleration?

Back

Centripetal acceleration (a_c) = v² / r, where v is the speed and r is the radius.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is the principle of conservation of momentum?

Back

In a closed system, the total momentum before an event is equal to the total momentum after the event.

Front

What is Newton's second law of motion?

Back

Newton's second law states that the force acting on an object is equal to the mass of that object multiplied by its acceleration (F = ma).

Front

What is gravitational potential energy?

Back

Gravitational potential energy (U) is the energy an object possesses due to its position in a gravitational field, calculated as U = mgh.