Optimus Prime is flying straight up at 57 m/s when heaccidentally drops his mega

Question

Optimus Prime is flying straight up at 57 m/s when heaccidentally drops his mega-ray blaster and it falls 69 m to theground below. Calculate how long it takes for his mega-ray blasterto hit the ground.
?? S A 20 kg mega blaster is completely submerged insaltwater and displaces an amount of saltwater weighing 25.4 N.Determine the buoyant force on the brick.
?? N Optimus Prime is flying straight up at 57 m/s when heaccidentally drops his mega-ray blaster and it falls 69 m to theground below. Calculate how long it takes for his mega-ray blasterto hit the ground.
?? S A 20 kg mega blaster is completely submerged insaltwater and displaces an amount of saltwater weighing 25.4 N.Determine the buoyant force on the brick.
?? N

Explanation / Answer

From equations ofmotion    4.9t2   - 57t - 69 =0

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