Physics 115

7. [0/4 Points] DETAILS PREVIOUS ANSWERS OSCOLPHYS2 2.7.WA.041. MY NOTES ASK YOUR TEACHER PRACTIC A cargo helicopter, descending steadily at a speed of 1.1 m/s, releases a small package. Let upward be the positive direction for this problem. (a) If the package is 18 m above the ground when it is dropped, how long (in s) does it take for the package to reach the ground? X What is the initial velocity of the package? How does it compare to that of the helicopter? What is its sign? What about the magnitude and sign of the acceleration? s (b) What is its velocity (in m/s) just before it lands? (Indicate the direction with the sign of your answer.) -19.7 X Use the time you found in part (a), plus the initial velocity and acceleration, in one of the constant acceleration kinematic relations. m/s Additional Materials eBook # Show My Work (Optional)