Mail ...oo LTE 28% 10:33 PM drive google.com MEDGAR EVERS COLLEGE DEPT OFPIHYSIC

Question

Mail ...oo LTE 28% 10:33 PM drive google.com MEDGAR EVERS COLLEGE DEPT OFPIHYSICAL ENVIRONMENT &COMPUTER; SCL. PHY 114-041: BASICPIHYSICS SPRING 2015 02/28/15 The following kamulas may be useful. i. Average velocity: ii. Average acceleration: a iii. 1 Equation of motion: v, at 2nd Equation moion: vet 3 Equation of motion: 2ad. where ve is the initial velocity, and visthe fmalvelocity. vi. Take the acceleration due togravity0g) to be 10ms. Encircle the letter that corresponds to the correct option. Two objects have the same size and shape butone ofthem istwice as heavy atheodher They are dropped simultaneously from a tower. Ifairresistance isnegligible, O they strike the ground the same time, but the heavier object has the lower acceleration because it has more mass. they strike the ground at de sme time and havethe samespeed C the heavier object strikes hegound before the ighter one. they strike the ground the same time but the heavier oljeet has the higher speed. met second

Explanation / Answer

1. (B) is correct as acceleration due to gravity does not depend on mass and size of the falling body.

2 . (D) it is the unit of velocity which is a vector quantity .

3. (D) is correct as if velocity of a body is constant then its acceleration is 0 .

4.(C) is correct as in both case i.e. falling and a body thrown up are acted by force of gravitation so acceleration is g in both case .

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