Physics 1st Semester Review 1 of 2

Front

What is a Free Body Diagram (FBD)?

Back

A graphical representation used to visualize the forces acting on an object.

Front

What does it mean for an object to have no acceleration?

Back

It means the object's velocity is constant, either at rest or moving at a constant speed in a straight line.

Front

How do you calculate the horizontal distance traveled by a projectile?

Back

Use the formula: distance = velocity x time. Time can be calculated using the height and gravitational acceleration.

Front

State Newton's 3rd Law of Motion.

Back

For every action, there is an equal and opposite reaction.

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

Define acceleration.

Back

Acceleration is the rate of change of velocity of an object with respect to time.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity representing how fast an object is moving, while velocity is a vector quantity that includes direction.

Front

What is gravitational acceleration near the Earth's surface?

Back

Approximately 9.81 m/s².

Front

How do you determine the net force acting on an object?

Back

By vectorially adding all the forces acting on the object.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic energy (KE) = 1/2 mv², where m is mass and v is velocity.