Self-assessment test
1.14. Represents a vector d = 20 m, in a horizontal direction, to the left, using as a standard 1 cm : 5 m. -1p
1.15. Represents the force of 600 N with which Johnny strikes with a hammer a nail in the wall, in a direction that makes an angle of 30° with the wall, using as standard 1 cm : 100 N. -1p
1.16. Two forces act on a body. We know: F1 = 400 N, which acts horizontally, to the left and the resulting force, F = 200 N, in the horizontal direction, to the left. The standard is: 1 cm : 50 N. Graph the force F2. -2p
1.17. Compose the following two vectors, which have the same application point: -2p
F1 = 180 N, direction that makes an angle of 40° with the vertical, upwards
F2 = 120 N, vertical direction upwards
Etalon: 1 cm : 30 N
1.18. A traveler goes 10 km North, then 60 km West, then 40 km South and finally 80 km East. The standard is: 1 cm : 10 km. Determine the resulting vector. -2p
Ex officio: -2p