From what height will the car have to be dropped

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Q. In a test of car bumpers, a car moving 7m/s collides head-on with a wall. From what height will the car have to be dropped in order to collide with the ground at the equal velocity?

Q. The pilot of an airplane travelling 170 wants to drop supplies to flood victims isolated on a patch of land 200 below. The supplies must be dropped how many seconds before the plane is directly overhead?

Reference no: EM1372218

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