Motion

Motion Worksheet-13

11. A train travels at a speed of 60 km/h for 0.52 h, at 30 km/h for the next 0.24 h and then at 70 km/h for the next 0.71 h. What is the average speed of the train?

A. 5.99 km/h                                 B. 59.9 km/h

C. 5.9 km/h                                   D. 59.9 m/s

12. The odometer of a car reads 2000 km at the start of a trip and 2400 km at the end of the trip. If the trip took 8 h, calculate the average speed of the car is :

A. 50 km h^–1

B. 13.9 ms^–1

Motion Worksheet-14

1. In a circular motion of radius r, linear velocity v = ____.

A. v = u + at

B. v = radius × angular velocity

C.

D. v = radius × angular acceleration

2. _____ is a vector quantity.

A. Distance                                    B. Displacement

Motion Worksheet-15

1. Is displacement a scalar quantity?

2. State whether distance is a scalar or a vector quantity.

3. Change the speed of 6 m/s into km/h.

4. What name is given to the speed in a specified direction?

5. Give two examples of bodies having non-uniform motion.

6. Name the physical quantity obtained by dividing ‘Distance travelled’ by ‘Time taken’ to travel that distance.