1. A student starts from the hostel and goes to his friend's house and then to his school. A is the displacement vector from the hostel to his friend's house. B is the displacement vector from his friend's house to school, and C is the direct path from the hostel to school. Which of the following vector operations is correct for the displacement from the hostel to his friend's house? (Points :2)
A - B
A + B
C - B
C + B
2. A boy runs at - 2 m/s east. What is another way of describing the boy's direction? (Points :2)
2 m/s west
2 m/s east
2 m/s north
2 m/s south
3. A truck moves with the velocity of 2 m/s and a car moves with the velocity of 4 m/s in the same direction. What is the velocity of the truck with respect to the car? (Points :2)
+ 6 m/s
- 6 m/s
+ 2 m/s
- 2 m/s
4. A dragonfly flies 5 m north and then flies 6.3 m west. What is its resultant displacement? (Points :2)
11 m
8 m
6m
5 m
5. A billiard ball moves with a velocity of 1 m/s at an angle of 30° with respect to the x-axis. What is its velocity along the Y direction? (Points :2)
0.5 m/s
0.6 m/s
0.9 m/s
1.0 m/s
A - B
A + B
C - B
C + B
2. A boy runs at - 2 m/s east. What is another way of describing the boy's direction? (Points :2)
2 m/s west
2 m/s east
2 m/s north
2 m/s south
3. A truck moves with the velocity of 2 m/s and a car moves with the velocity of 4 m/s in the same direction. What is the velocity of the truck with respect to the car? (Points :2)
+ 6 m/s
- 6 m/s
+ 2 m/s
- 2 m/s
4. A dragonfly flies 5 m north and then flies 6.3 m west. What is its resultant displacement? (Points :2)
11 m
8 m
6m
5 m
5. A billiard ball moves with a velocity of 1 m/s at an angle of 30° with respect to the x-axis. What is its velocity along the Y direction? (Points :2)
0.5 m/s
0.6 m/s
0.9 m/s
1.0 m/s