PHYS U3 Test REVIEW (Kinematics)

Front

What is displacement?

Back

Displacement is the shortest distance from the initial to the final position of an object, along with the direction. It can be zero if the object returns to its starting point.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What does a negative acceleration indicate?

Back

Negative acceleration indicates that an object is slowing down in the positive direction or speeding up in the negative direction.

Front

What does the slope of a position-time graph represent?

Back

The slope of a position-time graph represents the velocity of the object.

Front

What is the formula for calculating acceleration?

Back

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

Front

What is the role of air resistance in motion?

Back

Air resistance is a type of friction that opposes the motion of an object through the air, affecting its speed and acceleration.

Front

What is the significance of a Velocity-Time graph?

Back

A Velocity-Time graph shows how the velocity of an object changes over time, and its slope indicates the object's acceleration.

Front

What is the difference between average speed and instantaneous speed?

Back

Average speed is the total distance traveled divided by the total time taken, while instantaneous speed is the speed of an object at a specific moment in time.

Front

What is uniform motion?

Back

Uniform motion occurs when an object travels equal distances in equal intervals of time, indicating constant speed.

Front

What is the effect of gravity on falling objects?

Back

Gravity causes all objects to accelerate downwards at approximately 9.81 m/s², regardless of their mass, in the absence of air resistance.