Speed, Acceleration and Velocity

Front

Velocity = _______________

Back

Speed + direction

Front

The speed of an object in a particular direction is called _______________

Back

velocity

Front

A helicopter flies west 200 miles in 2 hours. What is its velocity?

Back

100 mph west

Front

A runner crossed the 1 mile marker of a race running at a speed of 9 miles per hour. She crossed the finish line running at a speed of 9.8 miles per hour. This is an example of _______________

Back

positive acceleration

Front

What two things must you know to determine speed?

Back

time and distance

Front

Acceleration is defined as _______________

Back

the rate of change of velocity over time

Front

If an object is moving in a straight line and its speed is increasing, it is experiencing _______________

Back

positive acceleration

Front

If an object is moving in a straight line and its speed is decreasing, it is experiencing _______________

Back

negative acceleration

Front

The formula for calculating speed is _______________

Back

Speed = Distance / Time

Front

What is the unit of speed in the metric system?

Back

meters per second (m/s)