Speed It Up
What word describes how fast an object is moving?
What is Speed
What two things must be included when describing velocity?
What is Speed and direction
What term means a change in velocity over time?
What is acceleration
On a distance-time graph, what does the horizontal axis usually represent?
What is time
What term describes a change in an object's position over time?
What is motion
What two measurements are needed to calculate speed?
What is Distance and time
A truck travels 45 miles per hour west. Is this speed or velocity?
What is Velocity, because both speed and direction are given.
A car increases its speed from 20 to 50 miles per hour. Is the car accelerating?
What is yes
A distance-time graph has a straight line that rises steadily. What does this show about the object's speed?
What is the object is moving at a constant speed.
Can an object have a negative speed? Explain.
What is no. Speed tells how fast an object moves and is not negative.
A student walks 20 meters in 5 seconds. What is the student's average speed?
What is 4 meters per second
A runner moves around a curved track without changing speed. Is the runner's velocity changing?
What is Yes. The runner's direction changes, so the velocity changes.
A driver presses the brakes and the vehicle begins slowing down. What is happening to its speed?
What is its speed is decreasing.
A velocity-time graph has a flat horizontal line above zero. What does this show about the object's velocity?
What is the object has constant velocity
A student walks 8 meters east and then 8 meters west. What is the total distance traveled?
What is 16 meters.
A skateboarder travels the same distance during every second. What type of speed is the skateboarder maintaining?
What is Constant speed
A car travels north at 30 miles per hour and then turns east while staying at 30 miles per hour. What changes: speed, velocity, or both?
What is Velocity changes, but speed stays the same.
A ball rolls down a hill and covers more distance during each second. What is happening to the ball's motion?
What is It is speeding up, so it is accelerating.
A line on a distance-time graph becomes steeper as time passes. What does this show about the object's speed?
What is the object is speeding up.
A student walks 10 meters north and then 10 meters south, ending at the starting point. What is the student's displacement?
What is 0 meters.
A ball rolls uphill and travels less distance during each second. What is happening to its speed?
What is Its speed is decreasing; the ball is slowing down.
A cyclist speeds up from 10 to 20 miles per hour while turning south. Why does the cyclist's velocity change?
What is Both the cyclist's speed and direction change.
A race car travels around a circular track at a constant speed. Why is it still accelerating?
What is Its direction is continuously changing, which changes its velocity.
Runner A has a steeper line than Runner B on a distance-time graph. Which runner is faster, and how can you tell?
What is runner A is faster because a steeper line shows that more distance is covered in the same amount of time.
A robot moves 6 meters away from its starting point and then travels 6 meters back. What are its total distance and displacement?
What is total distance is 12 meters, and displacement is 0 meters.