Displacement vs Distance HW

1. 1. You stand a couple of meters away from your partner. Your partner turn to the side so that you are looking at your partner’s profile. Your partner begin bouncing the basketball while standing in place.

2. 2. Next, have your partner again bounce the ball, but this time your partner should walk forward with the bouncing ball. You will remain stationary.

3. 3. Last your partner walk forward with the bouncing ball. This time, you move alongside your partner while continuing to view your partner’s profile.

How do the different reference frames affect how you describe the motion of the ball?

• 1. The motion of the ball is independent of the reference frame and is same for different reference frames.

• 1. The motion of the ball is independent of the reference frame and is different for different reference frames.

• 1. The motion of the ball is dependent on the reference frame and is same for different reference frames.

• 1. The motion of the ball is dependent on the reference frames and is different for different reference frames.

A cyclist rides 3 km west and then turns around and rides 2 km east.

What is her displacement?

West is in the negative direction and East in positive direction.

What distance does she ride?

Distance = _____ km

On an axis in which moving from right to left is positive, what is the displacement and distance of a student who walks 32 m to the right and then 17 m to the left?

• 1. Displacement is -15 m and distance is -49 m.

• 1. Displacement is -15 m and distance is 49 m.

• 1. Displacement is 15 m and distance is -49 m.

• 1. Displacement is 15 m and distance is 49 m.

If you and a friend are standing side-by-side watching a soccer game, would you both view the motion from the same reference frame?

• 1. Yes, we would both view the motion from the same reference point because both of us are at rest in Earth’s frame of reference.

• 1. Yes, we would both view the motion from the same reference point because both of us are observing the motion from two points on the same straight line.

• 1. No, we would both view the motion from different reference points because motion is viewed from two different points; the reference frames are similar but not the same.

• 1. No, we would both view the motion from different reference points because response times may be different; so, the motion observed by both of us would be different.

What is the difference between distance and displacement?

• 1. Distance has both magnitude and direction, while displacement has magnitude but no direction.

• 1. Distance has magnitude but no direction, while displacement has both magnitude and direction.

• 1. Distance has magnitude but no direction, while displacement has only direction.

• 1. There is no difference. Both distance and displacement have magnitude and direction.

Which statement correctly describes a race car's distance traveled and magnitude of displacement during a one-lap car race around an oval track?

• 1. The perimeter of the race track is the distance; the shortest distance between the start line and the finish line is the magnitude of displacement.

• 1. The perimeter of the race track is the magnitude of displacement; the shortest distance between the start and finish line is the distance.

• 1. The perimeter of the race track is both the distance and magnitude of displacement.

• 1. The shortest distance between the start and the finish line is the magnitude of the displacement vector.

A golfer putts on the eighteenth green at a distance of 5.0 m from the hole. The ball rolls straight, in the positive direction, but overshoots the hole by 1.2 m. The golfer then putts back to the hole and sinks the putt for par.

What is the distance traveled by the ball?

D = _____ m

A billiard ball travels 22 cm in the positive direction, hits the cushion and rebounds in the negative direction, and finally comes to rest 7.5 cm behind its original position.

 

What is the distance covered by the ball?

D = _____ cm