7. An object is thrown vertically upwards by a person's hands. While it is in contact with their hand, the object has an acceleration of
7. An object is thrown vertically upwards by a person's hands. While it is in contact with their hand, the object has an acceleration of a = (2.00t? + 12.0t) m/s?, with an initial velocity of zero. It is in contact with the person's hands for 1.2 s. How high above the point of release does this object go? Ignore the air resistance and height change due to the motion of the hand[Do not use non-constant acceleration kinematic equations as the acceleration is non-constant while the object is still in the hand] 8. A hot-air balloon has just lifted off and is rising at a constant speed of 2.00 m/s. Suddenly one of the passengers realizes that she has left her camera on the ground. A friend, watching the liftoff, picks the camera up, runs underneath the balloon, and tosses it straight upward with an initial speed of 13.0 m/s. a) Say the passenger is 2.50 m above her friend when the camera is tossed. How much higher above her friend is the passenger when the camera reaches the passenger? b) If the passenger misses catching the camera, does she get a second chance later on? If so, at what time
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