Question

2. In a game, a player is required to take first five steps forward followed by three steps in the backward direction and repeat the same until the destination, which is 12.5 m away, is reached. At the destination, there is a trap, which does not allow backward steps to be taken. [Each step is of 0.5 m length and take (1 s. Which of the following statements is correct in this context? (1) Average velocity is 2.5 m/s (2) Total time taken is 23 s (3) Total displacement required is 6 m (4) Total time taken is 85 s torte movie with an​

Answer 1

❥ Answer

Distance covered with 1 step = 1 m.

 Time taken = 1 s .

Time taken to move first 5 m forward = 5 s .

Time taken to move 3 m backward = 3 s.

 Net distance covered = 5-3=2 m.

 Net time taken to cover 2 m = 8 s.

 Drunkard covers 2 m in 8 s .

Drunkard covered 4 m in 16 s .

Drunkard covered 6 m in 24 s.

 Drunkard covered 8 m in 32 s.

 In the next 5 s, the drunkard will cover a distance of 5 m and a total distance of 13 m and falls into the pit.

 Net time taken by the drunkard to cover 13 m= 32+5 37 s.

Answer 2

5 steps in 5 seconds , distance = 2.5 m

3 steps in 3 seconds , distance = 1.5m

5 steps forward and three steps backwards = 5-3

= 2 steps forward,distance = 1m,Time taken = 8seconds

for distance 10m time = 80 seconds

for distance 2.5 m time = 5s

Total time = 85 s

Ans:- (4) Total time taken is 85 s