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! ^_^
For the first question, "A passenger in the rear seat of a car moving at a steady speed is at rest relative to..."
The answer is "the interior of the car." The passenger is at rest relative to the front seat of the car, as they are both moving at the same steady speed.
To get this answer, you need to understand the concept of relative motion. Relative motion refers to the motion of an object in relation to another object. In this case, the passenger is in the rear seat of the car, which means they are moving along with the car. Since both the passenger and the front seat of the car are moving at the same steady speed, the passenger is at rest relative to the front seat.
For the second question, "A person walks 1 mile every day for exercise, leaving her porch at 9:00 a.m. and returning at 9:25 a.m. What is the total displacement of her daily walk?"
The answer is "0." Displacement refers to the change in position of an object, taking into account both distance and direction. In this case, the person walks 1 mile away from her porch and then returns back to her porch. So, the total distance covered is 1 mile, but the displacement is 0 since the person ends up at the same position where she started.
For the third question, "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?"
The answer is "by driving west 6 blocks from the starting point." The driver could have reduced the distance traveled while maintaining the same displacement by driving directly west from the starting point instead of driving north, west, and then south. This would have formed a right-angled triangle, reducing the overall distance traveled.
For the fourth question, "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?"
The answer is "9 meters." Displacement refers to the straight line distance between the initial and final positions of an object. In this case, the ball rolls uphill 5 meters and then downhill 9 meters, ending up 9 meters away from the starting point. The magnitude of the displacement is the absolute value of the distance traveled in the given direction, which is 9 meters.