Grade 9 Physics - Motion One Word Questions with Answers

Grade 9 Physics – Motion (One Word Questions with
Answers)

1.​ Motion is the ______ in position of an object with time.
Answer: change

2.​ The study of motion is called ______.
Answer: kinematics

3.​ A body is said to be at rest if it does not change its ______.
Answer: position

4.​ The total path travelled by a body is called ______.
Answer: distance

5.​ The shortest path between two points is called ______.
Answer: displacement

6.​ Distance is a ______ quantity.
Answer: scalar

7.​ Displacement is a ______ quantity.
Answer: vector

8.​ A scalar quantity has only ______.
Answer: magnitude

9.​ A vector quantity has magnitude and ______.
Answer: direction

10.​ The SI unit of distance is ______.
Answer: metre

, 11.​ The SI unit of time is ______.
Answer: second

12.​ Speed is distance travelled per unit ______.
Answer: time

13.​ Velocity is displacement per unit ______.
Answer: time

14.​ Speed is a ______ quantity.
Answer: scalar

15.​ Velocity is a ______ quantity.
Answer: vector

16.​ The SI unit of speed is ______.
Answer: m/s

17.​ The SI unit of velocity is ______.
Answer: m/s

18.​ The SI unit of acceleration is ______.
Answer: m/s²

19.​ Acceleration is the rate of change of ______.
Answer: velocity

20.​ Negative acceleration is called ______.
Answer: retardation