Homework Help: Physics Please Check over my answers!

Posted by Aliana on Tuesday, January 17, 2012 at 12:26pm.

A passenger in the rear seat of a car moving at a
steady speed is at rest relative to

*the side of the road
a pedestrian on the corner ahead
the front seat of the car
the wheels of the car

A person walks 1 mile every day for excercise, leaving
her porch at 9:00 a.m. and returning at 9:25 a.m.
What is the total displacement of her daily walk?

1 mile
*0
25 minutes
none of the above

A person drives north 6 blocks, turns west, and
then drives 6 blocks. The driver then turns south
and drives 6 blocks. How could the driver have made
the distance shorter while maintaining the same
displacement?

*by driving west 6 blocks from the starting point
by driving north 4 blocks and west 7 blocks
by driving south 6 blocks from the starting point
by driving back to the starting point by the same route

A ball is rolled uphill a distance of 5 meters before it
slows, stops, and begins to roll back. The ball rolls
downhill 9 meters before coming to rest against a tree.
What is the magnitude of the ball's displacement?

4meters
*9meters
14meters
45meters

Thank You :) I appreciate it! ^_^

Physics Please Check over my answers! - Henry, Wednesday, January 18, 2012 at 7:56pm
1. Displacement is the difference between the starting point and the end. In this case, they are the same,Therefore, the displacement is 0.

2. Ans. is A.

3. 9 - 5 = 4 meters beyond starting point. Disp. = 4 meters.
Ans. is A.
Physics Please Check over my answers! - TwinWin, Saturday, March 10, 2012 at 2:45pm
Answer to the first question is: the front seat of the car.
Second answer is: 0
Third answer is: by driving west 6 blocks from the starting point
Fourth answer is: 4 meters

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