Name:_________________________________ ACCELERATION PRACTICE DIRECTIONS: Solve the following problems, making sure to label all values and show all work. 1. Bicyclist accelerates for rest to a speed of 4.45 seconds over a 5 second time interval. What is the acceleration of the bike? 2. A train is travelling at 18.0 m/s. It applies its brakes, and begins to slow. If the speed after 23 seconds is 10.4 m/s, what was its rate of deceleration? 3. A hot air balloon is released from rest and achieves a velocity of 6 m/s after 45 seconds. What is its acceleration? 4. A cheetah can reach a top speed of 27.8 m/s in 5.2 seconds? What is the cheetah’s average acceleration? 5. A dragster starts from rest and accelerates for 4.0 seconds at a rate of 20 m/s. What is its acceleration? 6. What is the change in velocity of a car that accelerates from 10 m/s2 to 26 m/s2 in 12 seconds? 7. How long would it take a ball to go from rest to 32 m/s if the rate of acceleration was 1.2 m/s2? 8. What is the initial speed of a spit ball if after undergoing an acceleration of -.6 m/s2 for 3 seconds it came to rest? 9. If something accelerates from rest at a rate of .2 m/s2 for 3 minutes, what is its speed after this time period? 10. If the acceleration due to gravity is 9.8 m/s2, how fast will a penny be falling, if dropped from rest, just before it hits the ground, if it falls for 10 seconds?