Vectors

There is a vector 𝐷 in the second quadrant, its magnitude is 3.0 making an angle of 25° with a negative x direction.

Which are the vector components?

• 𝐷𝑥=1.3, 𝐷𝑦=−2.7

• 𝐷𝑥=−1.3, 𝐷𝑦=2.7

• 𝐷𝑥=−2.7, 𝐷𝑦=1.3

• 𝐷𝑥=2.7, 𝐷𝑦=−1.3

In the picture, the arrows show the movement of a player in a stadium. If the path 1 is of 60 m, path 2 of 25 m

and path 3 of 40 m, what will be the value of the total displacement?

• 0 m

• -5 m

• 5 m

• 125 m

Of the following physical quantities, which one is considered to be a vector?

• An airplane that targets traveling at 0°.

• An airplane traveling at 300.0 km/h.

• A car traveling a distance of 600.0 km at an average speed of 80.0 Km/h.

• A boat traveling with a speed of 125.0 km/h to the southeast of Tampico.

The measurable quantities that have both magnitude and direction are called:

• Relative

• Absolute

• Scalar

• Vector

Which of the following quantities referred to a magnitude scale?

• An airplane flies at 150 km/h east.

• boy that goes from his home to a friend that is 20 km north.

• A car moving at a speed of 60 km/h.

• The force exerted by the earth on a mass of 50 kg.