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# PHYSICS 1305-You can throw a ball vertically up in a car moving with

Subject: Physics    / General Physics
Question

You can throw a ball vertically up in a car moving with a constant velocity and have it land back in your hand because

Select one:
a. there is no net horizontal force acting on the ballb. the reference system attached to the car is noninertial.c. there is a net force in the forward direction.d. the force in the forward direction is canceled by the inertial forcee. none of above

The first postulate of special relativity
Select one: a. says that there is no absolute space b. is a reaffirmation of the Galilean principle of relativity c. states that the laws of physics are the same in all inertial reference systems. d. All of these statements are true. e. none of these statements is true.

A train is traveling along a straight, horizontal track at a constant speed that is only slightly less than that of light. If an observer in the train holds a ball directly over a white spot on the floor and drops it, the ball will land _____ the white spot.
Select one: a. behind b. in front of c. on d. on the side of e. none of above
A train is traveling along a straight, horizontal track at a constant velocity of 50 mph. An observer in the train holds a ball directly over a white spot on the floor of the train. If she drops the ball, it will land ____ the white spot.
Select one: a. behind b. on c. in front of d. to the side of e. none of above