A scientist throws a 0.2 kg apple and measures the amount of time it takes to return to its original height. Which of the following vectors
represent the initial velocity that will result in the longest time in flight
for the apple?

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sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.