10. examples of vector quantity are ______________ (you can tick more than one answer)\na) acceleration\nb)…

10. examples of vector quantity are ______________ (you can tick more than one answer)\na) acceleration\nb) displacement\nc) speed\nd) velocity\n11. lilly is paddling in her kayak 3 m/s east in a river that has a current of 0.5 m/s west. what is her resultant velocity?\na) 2.5 m/s east\nb) 3.5 m/s east\nc) 2.5 m/s west

10. examples of vector quantity are ______________ (you can tick more than one answer)\na) acceleration\nb) displacement\nc) speed\nd) velocity\n11. lilly is paddling in her kayak 3 m/s east in a river that has a current of 0.5 m/s west. what is her resultant velocity?\na) 2.5 m/s east\nb) 3.5 m/s east\nc) 2.5 m/s west

Answer

Explanation:

Step1: Recall vector - scalar definitions

Vector quantities have both magnitude and direction, while scalar quantities have only magnitude.

Step2: Analyze each option for question 10

Acceleration has magnitude and direction (e.g., 5 m/s² north), displacement has magnitude and direction (e.g., 10 m east), speed has only magnitude (e.g., 20 km/h), and velocity has magnitude and direction (e.g., 15 m/s south). So acceleration, displacement, and velocity are vector quantities.

Step3: Solve question 11

Take the east - west direction into account. Let the east direction be positive and the west direction be negative. The velocity of the kayak is (v_{kayak}=3\ m/s) and the velocity of the current is (v_{current}=- 0.5\ m/s). The resultant velocity (v = v_{kayak}+v_{current}). [v=3+( - 0.5)=2.5\ m/s] Since the result is positive, the direction is east.

Answer:

  1. a) acceleration, b) displacement, d) velocity
  2. a) 2.5 m/s East