4 questions to be answered

An elevator is moving downward when someone presses the emergency stop button. The elevator comes to rest a short time later. Give the signs for the velocity and the acceleration of the elevator after the button has been pressed but before the elevator has stopped. Enter the correct sign for the elevator's velocity and the correct sign for the elevator's acceleration, separated by a comma. For example, if you think that the velocity is positive and the acceleration is negative, then you would enter +, - . If you think that both are zero, then you would enter 0, 0 . View Available Hint(s) I Submit Part B A child throws a baseball directly upward. What are the signs of the velocity and acceleration of the ball immediately after the ball leaves the child's hand? Enter the correct sign for the baseball's velocity and the correct sign for the baseball's acceleration, separated by a comma. For example, if you think that the velocity is positive and the acceleration is negative, then you would enter +, - . If you think that both are zero, then you would enter 0 , 0 . View Available Hint(s) Submit Part C A child throws a baseball directly upward. What are the signs of the velocity and acceleration of the ball at the very top of the ball's motion (i.e., the point of maximum height)? Enter the correct sign for the baseball's velocity and the correct sign for the baseball's acceleration, separated by a comma. For example, if you think that the velocity is positive and the acceleration is negative, then you would enter +, - . If you think that both are zero, then you would enter 0, 0 . View Available Hint(s) What is the acceleration of the pike during this strike? Express your answer in meters per second squared. When striking, the pike, a predatory fish, can accelerate from rest to a speed of 4.4 m/s in 0.13 s . AEd 0 0 ? a= n/$2 Submit Request Answer Part B How far does the pike move during this strike? Express your answer in meters. IVO AEd * 0 0 ? m Submit Request Answer 1 3 of 4 Small frogs that are good jumpers are capable of Review | Constants | Periodic Table remarkable accelerations. One species reaches a Part A takeoff speed of3.7 m/s in60 ms . What is the frog's acceleration during the jump? Express your answer with the appropriate units. HA a = Value Units Submit Request