# CBSE Class IX | Important Question Science_ Motion

**Q. 1. **When the passenger m oving in a bus , the road side trees appear to b e moving ---------------------------------- (a) Back ward (b)For ward

**Q. 2. **In uniform motion the object covers ------------ (a) equel distance (b) un equal distance

**Q. 3. **Where objects cover un equal distances in equal interval of time then the motion is called ---------------- (a) uniform motion (b) non uniform motion

**Q. 4. **The average speed = =A car accelerate = (a) Total time taken /total distance traveled (b) Total distance traveled/total time taken

**Q. 5. ** v = (a) t/s (b) s/t

**Q. 6. **An object travels 16m in 4sec and another 16 m in 2 sec. what is the average speed of the object----------- (a) 5.33 ms-1 (b) 5. 34 ms-1

**Q. 7. **If we specify , its direction of motion along with its speed , the quantity that specifies with the aspects is called------------- (a) velocity (b) motion

**Q. 8. **Automobiles are fitted with a device that show the distance traveled . such a device is known ---------- (a) odometer (b) Speedo meter

**Q. 9. **The velocity of an object can be -------------- (a) non uniform or variable (b) uniform or variable

**Q. 10. **Average velocity = (a) initial velocity + final velocity/ 2 (b) initial velocity + final velocity/1

**Q. 11. **Average velocity = (a) placement/ total time taken (b) Displacement/ total time taken

**Q. 12. **Acceleration = (a) change in velocity/ time taken (b) change in motion / time

**Q. 13. **S = (a) ut + 1/2at^{2} (b) ut + 1 at^{2}

**Q. 14. **A car accelerate uniformly from 18 km h^{-1} to 36 km h^{-1} in 5 sec . calculate the acceleration------------- (a) 1ms^{-2}(b) 1 ms^{-3}

**Q. 15. **A train starting from rest attaind a velocity of 72 km h^{-1} in 5 minutes . Assuming that the acceleration is uniform. Find the distance traveled by the train for attaing this velocity --------------------------------- (a) 2km (b) 5 km