Name _________________________________ Review Problems: Speed, time, distance and acceleration 1. Talia loves to jump rope. She jumps 879 times in 403 seconds. At what speed is she jumping? 2. Jessica loves to read. She reads at a speed of 3 pages per minute. How many pages can she read in 2 hours? (First convert 2 hours into minutes) 3. Lincoln can run at a speed of 3 m/s. How long would it take him to run 200 meters? 4. Alyssa does jumping jacks in her spare time. She does 300 jumping jacks in 2.5 minutes. How many jacks does she do per minute? 5. McKenzie is racing Jaden around the track (400 m). McKenzie runs 4.5 m/s and Jaden runs 4.25 m/s. By how many seconds does McKenzie win? 6. Miranda is riding her bicycle. She goes from 5 m/s to 20 m/s over a period of 30 seconds. At what rate is her acceleration? 7. Abbie was running at a rate of 5 m/s and over a period of 5 seconds slowed down to 3 m/s. What is her rate of acceleration? 8. Josh is doing sit-ups at a speed of 5 sit-ups per 7 seconds. (First find this speed). Three minutes (180 seconds) later, he is doing sit-ups at a rate of 7 sit-ups per 8 seconds (Second find this speed). What is Josh’s acceleration? 9. What does a horizontal line indicate on a DISTANCE/TIME graph? _______________________________________________________________ _______________________________________________________________ 10. What does a horizontal line indicate on a SPEED/TIME graph? _______________________________________________________________ _______________________________________________________________ 11. Acceleration is defined as the rate of change of ___________________, which is an object’s ____________________ and _________________________. List 3 ways an object can undergo acceleration. a. ____________________________________ b. ____________________________________ c. ____________________________________ 12. Why would you need to know the velocity of a hurricane, rather than its speed? _______________________________________________________________ _______________________________________________________________ 13. Make up a story in which a person travels a distance of 10 meters but is only displaced 2 meters. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________