Physics Semester A review

Front

What is positive velocity?

Back

Positive velocity indicates that an object is moving in the positive direction (e.g., to the right or upward) and its speed is increasing.

Front

What does it mean when velocity is getting slower?

Back

When velocity is getting slower, the object is still moving in a direction but its speed is decreasing over time.

Front

What is negative velocity?

Back

Negative velocity indicates that an object is moving in the negative direction (e.g., to the left or downward).

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, acting in the opposite direction to the movement.

Front

How do you calculate acceleration?

Back

Acceleration is calculated using the formula: a = (final velocity - initial velocity) / time.

Front

If a golf ball accelerates at 15 m/s² from 0 m/s to 50 m/s, how long does it take to reach that speed?

Back

It takes 3.3 seconds to accelerate.

Front

What does a flat segment on a velocity-time graph represent?

Back

A flat segment on a velocity-time graph represents a period of constant velocity, meaning the object is moving at a steady speed.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion; it is directly related to the mass of the object.

Front

What is momentum?

Back

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

Front

What does a negative acceleration indicate?

Back

Negative acceleration indicates that an object is slowing down in the direction of its motion.