11.2 Speed And Velocity Answer Key

Question: Define Speed..

Answer: Is the ratio of the distance an object moves to the amount of time the object moves

Question: The SI units for speed are

Answer: Meters per second (m/s)

Question: How is Instantaneous speed different than average speed?

Answer: Instantaneous speed is measured at a particular instant and average speed is determined for the entire existence or time of a trip

Question: What is the equation you use for calculating the velocity?

Answer: Velocity = distance/ time

Question: What is the equation you use for finding the time?

Answer: Time=distance/velocity

Question: What is the equation you use for finding the distance?

Answer: Distance= (time)(velocity)

Question: What type of speed does an automobile’s speedometer display?

Answer: The instantaneous speed

Question: The slope of a line on a distance-time graph represents..

Answer: Speed

Question: How do speed and velocity differ?

Answer: Speed is the ratio of the distance and time of a moving object and velocity is speed and direction put together

Question: Describe what a change in velocity would be..

Answer: A moving object gains speed, a moving object changes direction, a moving object slows down