Someone, please help me with this 1. Distance traveled during the first minute (A-B) *

40 m

100 m

140 m

180 m

2. Displacement after the first minute (A-B) *

180 m west

180 m east

100 m west

100 m east

3. Distance traveled during the first 2 minutes (A-B-C)

40 m

140 m

320 m

420 m

4. Displacement after the first 2 minutes of travel (A-B-C) *

40 m east

40 m west

140 m east

140 m west

5. Distance traveled during the total time of 3 minutes (A-B-C-D) *

140 m

240 m

360 m

420 m

6. Displacement after the total 3 minutes of travel (A-B-C-D) *

40 m east

40 m west

140 m east

140 m west

Explanation:

1). Distance traveled during the first minute (A-B)

    = Distance from A to C + Distance from C to D + Distance from D to B

    = 40 + 100 + 40

    = 180 m

   Option (4) will be the answer.

2). Displacement after first minute (A-B)

    = Distance from A to B

    = 180 m East

    Option (2) is the answer.

3). Distance traveled during the first 2 minutes (A - B - C)

    = Distance from A to B + Distance from B to C

    = 180 + 140

    = 320 m

    Option (3) will be the answer.

4). Displacement after first 2 minutes (A-B-C)

    = Distance between A and C

    = 40 m towards east

    Option (1) is the answer.

5). Distance traveled during 3 minutes (A-B-C-D)

    = Distance between A to B + Distance between B to C + Distance between C to D

    = 180 + 140 + 100

    = 420 m

   Option (4) is the answer.

6). Displacement after total 3 minutes (A-B-C-D)

    = Distance between A and D

    = Distance between A to C + distance between C to D

    = 40 + 100

    = 140 m

     And the direction is towards East.

     Option (3) is the answer.

conservation of mass

mass before something happens = mass afterwards