Question

Part II: True or False (5 pts each) 6) Any object that is in motion must be under the influence of an external force 7) If two objects of different masses are dropped from the same height, the heavier object will reach the ground before the lighter object does. 8) A cannon ball shot at an angle of 45°, and which lands at the same height it takes off from, will have zero horizontal velocity at its maximum height. 9) If a person walks 3 meters due north, 4 meters due west, this person's net displacement is 5 meters. 10) If two blocks are connected by a string that runs over a pulley, and one block hangs off the side of a table and the other block sits on top of the table, the tension in the string connecting the blocks has the same magintude everywhere in the string Part III: Short Answer. SHOW ALL WORK TO RECIEVE FULL CREDIT

Answer 1

False, motion can be uniform motion also in which there is no external force 7) False, 60th the object will reach the ground simultaneously on same 'g' acts on then 8) False, at maximum height it horizontal velocity in v_cos 45 degree not zero 9) True 10) False, for the mass less string only, tension in same every where