CBSE - Motion

1 Motion A stone is dropped from the top of a tower. Its velocity after it has fallen 20 m is (take g = 10m/s²)
(1) –10 m/s (2) 10 m/s (3) – 20 m/s (4) 20 m/s

2 Motion Which of the following figures represent uniform motion of a moving object correctly?


ans 1


3. In a distance-time graph, if the line is horizontal, then the object is:
(1) Accelerating
(2) Speeding up
(3) At rest
(4)  Slowing down

3 Motion The distance travelled by a body is directly proportional to the time, then the body is said to have -

(1)  Zero speed
(2)  Zero velocity
(3)  Constant speed
(4)  None of these

4 Motion How many meters is equal to 1 nanometer?
(1) 10^–9 meter
(2) 10^–10 meter
(3) 10 ⁹ meter
(4) 10¹⁰ meter

5 Motion The initial velocity of the free falling object is _____________?
(1) More
(2) Less
(3) Zero
(4) 9.8 m/s

6 Motion Area under a v – t graph represents a physical quantity which has the unit:
(1) m²
(2) m / s
(3) m / s²
(4) m

7 Motion 

In the distance-time graph of a cyclist, what is happening between B-C and C-D?

(1) B-C: cyclist is coming back to where he started, C-D: cyclist is stationary.
(2) B-C: cyclist is stationary, C-D: cyclist is accelerating.
(3) cyclist is stationary, C-D- speed is increasing
(4) B-C: cyclist is stationary, C-D: cyclist is coming back to where he started.

8 Motion The speed-time graph for a particle moving at constant speed is a straight-line ________ to the time axis.

(1) perpendicular
(2) parallel
(3) inclined
(4) aligned

9 Motion The distance travelled by the body between 0 to 20 seconds?

(1) 260m
(2) 160m
(3) 300m
(4) 60m

10 Motion The ratio of the heights from which two bodies are dropped is 3:5 respectively. The ratio of their final velocities is:
 (1) 9 : 25
 (2) √ 3 : √ 5
 (3) 5 : 3
 (4) √5 : √3