physics
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A suitcase (mass m = 15 kg) is resting on the floor of an elevator. The part of the suitcase in contact with the floor measures 0.50 m × 0.15 m. The elevator is moving upward with an acceleration of magnitude 1.00 m/s2. What pressure (in excess of atmospheric pressure) is applied to the floor beneath the suitcase?

the force on the floor is m(g+a)
pressure is force/area 
A suitcase (mass m = 15 kg) is resting on the floor of an elevator. The part of the suitcase in contact with the floor measures 0.50 m × 0.15 m. The elevator is moving upward with an acceleration of magnitude 1.40 m/s2. What pressure (in excess of atmospheric pressure) is applied to the floor beneath the suitcase?
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