How can I solve questions one through 5 I did questions 1 but I think it wrong

1. A ball has an initial of 20 m/s and a final velocity of 42 m/s after 10 sec. During the 10 seconds does the ball experience a positive, negative or zero acceleration? (10 Points) acceleration For questions 2, 3, 4, & 5 give only the equation you would use as your answer. (5 Points Each) 2. An anvil is dropped from a height of 50m and accelerates freely at - 2 . 9.81 m/s2 due to gravity. How long is it in the air? 3. A car is speeding on the Thruway at a rate of 30 m/s when the driver 3 . sees a state trooper. The car brakes for 2s to reach the speed limit which is 26.8 m/s. What is the car's acceleration? 4. A car with an initial velocity of 10 m/s accelerates at a rate of 1 m/s 4. for 200 m. What is the car's final velocity? 5. A car has an initial velocity of 5 m/s then it accelerates at a rate of 5. 6 m/s2 for 10 m. What is the final velocity of the car? Solve Questions 6, 7 and 8 completely. Show all work! (10 Points