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A) The diameter of the Milky Way Galaxy is estimated at about 105 light years. Express...

A) The diameter of the Milky Way Galaxy is estimated at about 105 light years. Express this distance in meters.

A) 9 x 1019m B) 10 x 1016m C) 9 x 1018m D)10 x 1015m E)9 x 1020m

B) Arvin the Ant is on a picnic table. He traveled 30 cm eastward, then 25 cm northward and finally X cm westward. If the magnitude of Arvin’s net displacement is 27 cm, what is the distance Arvin traveled westward?

A)20 cm B)30 cm C)27 cm D)38 cm E)25 cm

C) A block of mass 5.0 kg rests on a horizontal surface where the coefficient of sliding kinetic friction between the two is 0.2. A string attached to the block is pulled horizontally, resulting in a 4 m/s2 acceleration by the block. Find the tension of the string.

A) 40 N B)10 N C)20 N D)30 N E)5.0 N

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