III.2.2. Fișă de autoevaluare

📋 Fișă de autoevaluare rezolvată - Mișcare și Repaus

1. What is the mechanical condition of a TV compared to the table. -1p

2. What can you say about the movement of a mobile whose speed increases and takes a curve? -1p

3. The movement data of the mobile 1 are entered in the below table.

a) Determine the positions of the mobile M₂ for the times passed in the table, using its law of motion: x_M2 = 3 ∙ t. -1p

b) Make the motion graph of the mobile M₁. Use as standards: 1 cm : 10 m și 1 cm : 5 s. -1,5p

c) Determine the position of the mobile M₁ at the time of 25 min, on the graph. -0,5p

d) Determine the average speed of the mobile M₁. -1p

4. Transforms: v = 300 mm/min în m/s -1p

5. A body is let loose for 6s. Knowing the acceleration of 10 m/s², find out the final speed of the body. -1p

Ex officio -2p