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, where it always ends up at the same point where it started. What is true about the race car's speed and velocity?
It travels at different speeds around the track, but has the same velocity.