One Mark questions
1. Can displacement be zero even when distance is not zero?
2. Can the distance travelled by an object be smaller than magnitude of its displacement?
3. A particle is moving with uniform velocity. What is its acceleration?
4. How can you get speed of an object from its distance – time graph?
5. How can you get distance of an object from its speed – time graph?
6. A brick & an elephant are in free fall. What is common in their motion?
7. When an object is thrown vertically upwards. What is its velocity at the highest point?
8. Can velocity & acceleration point in opposite directions?
9. Define acceleration.
10. What is non uniform motion?
Two Marks questions
1. Differentiate scalars & vectors?
2. What is retardation? How does it affect the speed?
3. Can speed of a body vary with its velocity constant? Explain.
4. Why is circular motion with constant speed called accelerated motion?
5. State the difference between distance & displacement.
6. What is the difference between speed & velocity?
7. What does a speedometer & odometer indicate?
Three Marks questions
1. If an object is thrown vertically upwards with speed 49 ms-1. How long does it take to complete upward journey? What maximum height does it achieve?
2. An object starting from rest covers 20 metres in first 2 seconds & 160 metres in next 4 seconds. What is its velocity after 7 seconds from the start?
Five Marks questions
1. Derive all the three equations of motion for uniform acceleration using graphical method.
2. A car a moving at rate of 72 km/h and applies brakes which provide a retardation of 5 ms-2. (i) How much time does the car takes to stop. (ii) How much distance does the car cover before coming to rest? (iii) What would be the stopping distance needed if speed of the car is doubled?