Speed
What is the formula for calculating speed?
Distance / Time
What is the formula for calculating velocity?
What is the formula for calculating average acceleration?
Average Acceleration = (Final Velocity - Initial Velocity) / Time
A change in an object's position over time in relation to a reference point.
Motion
An increase in speed or velocity.
Positive acceleration
A car travels 200 miles in 4 hours. What is its speed?
50 miles per hour (mi./hr.)
Velocity differs from speed because it must also include...
Direction
TRUE or FALSE - Acceleration is only a change in speed.
FALSE - Acceleration is a change in speed or direction.
An object that appears to stay in one place in order to determine another object's motion.
Reference point
A decrease in speed or velocity.
Provide one unit that can be used to measure speed.
TRUE or FALSE: Only the cardinal directions (north, south, east, or west) are sufficient to use when describing the velocity of an object.
FALSE - General directions such as up, down, right, or left can also be used to describe velocity.
A car is traveling at a speed of 30 m/s, then accelerates to a speed of 50 m/s in 5 seconds. What is its average acceleration?
4 m/s2
The total distance an object travels divided by its total time of travel.
Average speed
A Tesla Cybertruck can accelerate from 0 m/s to 27 m/s in 2.6 seconds
A Porsche 911 GT3 can accelerate from 0 m/s to 27 m/s in 3.2 seconds
Which vehicle is faster?
Tesla Cybertruck
A bicycle travels 5 miles in 20 minutes. What is its speed in miles per hour (mi/hr)?
15 miles per hour (mi/hr)
A race horse takes off facing east and covers about 34 meters in 2 seconds. What is its average velocity?
A plane is taxiing at a velocity of 9 m/s. For 30 seconds, It accelerates along the runway and takes off at a velocity of 72 m/s. What is the plane's average acceleration?
2.1 m/s2
The speed at which an object is traveling in a single direction.
Velocity
TRUE or FALSE - A plane reaches its cruising velocity of 500 miles per hour west. It changes its direction to travel south and maintains its velocity. This plane did NOT accelerate
FALSE - The plane changed direction, so it did accelerate.
A car travels at a speed of 35 miles per hour for 0.08 hours. What distance did it travel?
2.9 miles
A bullet train travels 900 kilometers west in 300 minutes. What was the train's average velocity?
Provide your answer in kilometers per hour (km/hr.)
180 kilometers per hour (km/hr.) west
A second plane lands a moment later. Right before it touches the ground, it is moving at a velocity of 78 m/s. It then comes to a stop after 30 seconds. What is the plane's average acceleration?
- 2.6 m/s2
The rate at which an object changes speed or direction.
Acceleration
A race car travels around a circular track, on which the starting line is the same as the finishing line. What is the car's average velocity?
0 m/s