A I think .......
Explanation:
Answer:
Motion - zero displacement. A tram leaves the depot, travels along its route and returns back to the depot. The tram has covered a total of 80km but its displacement is 0km since it ends up where it started. A cart moves along a straight track for 50m.
Because its is a liquid and not a solid
The acceleration of the first block (4 kg) is -9.8 m/s².
The given parameters:
- <em>Mass of the first block, m₁ = 4.0 kg</em>
- <em>Mass of the second block, m₂ = 2.0 kg</em>
The net force on the system of the two blocks is calculated as follows;

where;
- <em>T </em><em>is the tension in the connecting string due weight of the first block</em>

Thus, the acceleration of the first block (4 kg) is -9.8 m/s².
Learn more about net force on two connected blocks here: brainly.com/question/13539944