Q19. The distance between two stations is 240 km. A train takes 4 hours to cover this distance. Calculate the speed of the train.

Q20. A simple pendulum takes 32 s to complete 20 oscillations. What is the time period of the pendulum?

Q21. Salma takes 15 minutes from her house to reach her school on a bicycle. If the bicycle has a speed of 2 m/s, calculate the distance between her house and the school.

Q22. When pendulum is said to have one complete oscillation?

Q23. The following Fig. shows the distance-time graph for the motion of two vehicles A and B. Which one of them is moving faster?

Q24. Classify the following as motion along a straight line, circular or oscillatory motion:

(i) Motion of your hands while running. ________________

(ii) Motion of a horse pulling a cart on a straight road. ______________

(iii) Motion of a child in a merry-go-round.  ____________________

(iv) Motion of a child on a see-saw. ______________________

(v) Motion of the hammer of an electric bell. __________________

(vi) Motion of a train on a straight bridge. _____________________

Q25. The odometer of a car reads 57321.0 km when the clock shows the time 08:30 AM. What is the distance moved by the car, if at 08:50 AM, the odometer reading has changed to 57336.0 km? Calculate the speed of the car in km/min during this time. Express the speed in km/h also.

Q26. Show the shape of the distance-time graph for the motion in the following cases:

(i) A car moving with a constant speed.

(ii) A car parked on a side road.

Q27. A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. Calculate the total distance covered by the car.

Last modified: Sunday, 6 January 2019, 9:02 PM