Question

subject - science
multiple choice question

Q1) Arun goes from station A to station B covering a distance of 10 km. then he returns back from station B to station A again covering a distance of 10 km.

1) total distance covered as well as displacement of Arun is 20 km.
2) total distance covered as well as displacement of Arun is zero.
3) total distance covered by arun is 20 km but his displacement is zero.
4) total displacement of arun is 20 km but distance covered by him is zero.

Q2) slope of distance - time graph gives the value of -

1) displacement
2) speed
3) velocity
4) acceleration

Q3) the numerical ratio of displacement to distance for a moving object is -

1) always less than 1.
2) always equal to 1.
3) always greater than 1.
4) equal to or less than 1.

Q4) in adjoining figure displacement - time graphs for two particles A and B have been shown. select the only wrong statement out of the following:

1) both A and B are describing linear paths.
2) both A and B are moving with uniform velocity.
3) velocity of A is more than that of B.
4) velocity of B is more than that of A

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Answer 1

Answer:

Q:1 = 3:Total distance covered by Arun is 20km but his displacement is 0(zero)

Q:2 = 2:The speed can be determined from the slope of the Distance-time graph.

Slope = run/rise=time/distance.

Q:3 = 4:equal to or less than 1.

explanation:

As the magnitude of displacement always either less than or equal to distance travel. Hence, the numerical ratio of displacement to distance is either less than or equal to 1.

Answer 2

Answer:

distance of 10 km. then he returns back from