EduSahara™ Assignment
Name : Relative Speed Concepts
Chapter : Time and Distance
Grade : ICSE Grade VIII
License : Non Commercial Use
Question
1
1.
In how much time will a train A of length 268.78 m travelling at a speed of 8.26 m/sec will cross another train B of length 338.73 m travelling in the same direction at a speed of 7.85 m/sec?
(i)
1480.73 sec
(ii)
1482.73 sec
(iii)
1479.73 sec
(iv)
1483.73 sec
(v)
1481.73 sec
Question
2
2.
In how much time will a train A of length 234.88 m travelling at a speed of 11.10 m/sec will cross another train B of length 130.34 m travelling in the opposite direction at a speed of 8.27 m/sec?
(i)
18.85 sec
(ii)
20.85 sec
(iii)
16.85 sec
(iv)
17.85 sec
(v)
19.85 sec
Question
3
3.
In how much time will a train of length 378.58 m travelling at a speed of 9.18 m/sec crosses a man riding a cycle in the same direction at a speed of 3.92 m/sec?
(i)
71.97 sec
(ii)
69.97 sec
(iii)
72.97 sec
(iv)
70.97 sec
(v)
73.97 sec
Question
4
4.
In how much time will a train of length 380.47 m travelling at a speed of 7.62 m/sec crosses a man riding a cycle in the opposite direction at a speed of 6.92 m/sec?
(i)
27.17 sec
(ii)
28.17 sec
(iii)
26.17 sec
(iv)
24.17 sec
(v)
25.17 sec
Question
5
5.
A motor boat can move at a speed of 12.17 m/sec in still water. If it goes upstream for 425.27 sec, it travels a distance of 1952.00 m. What is the speed of the stream?
(i)
6.58 m/sec
(ii)
8.58 m/sec
(iii)
5.58 m/sec
(iv)
9.58 m/sec
(v)
7.58 m/sec
Question
6
6.
A motor boat can move at a speed of 22.20 m/sec in still water. If it goes downstream for 123.33 sec, it travels a distance of 3880.00 m. What is the speed of the stream?
(i)
11.26 m/sec
(ii)
9.26 m/sec
(iii)
10.26 m/sec
(iv)
7.26 m/sec
(v)
8.26 m/sec
Question
7
7.
A motor boat can travel at a speed of 13.00 m/sec downstream and 4.16 m/sec upstream. What is the speed of the motor boat in still water?
(i)
9.58 m/sec
(ii)
7.58 m/sec
(iii)
8.58 m/sec
(iv)
10.58 m/sec
(v)
6.58 m/sec
Question
8
8.
A motor boat can travel at a speed of 26.91 m/sec downstream and 7.99 m/sec upstream. What is the speed of the stream?
(i)
8.46 m/sec
(ii)
7.46 m/sec
(iii)
10.46 m/sec
(iv)
9.46 m/sec
(v)
11.46 m/sec
Question
9
9.
A motor boat can travel at a speed of 8.85 m/sec downstream and 1.43 m/sec upstream. How much distance can the boat travel in 39.68 sec in still water?
(i)
202.96 m
(ii)
205.96 m
(iii)
201.96 m
(iv)
204.96 m
(v)
203.96 m
Question
10
10.
A motor boat can travel at a speed of 15.49 m/sec downstream and 10.83 m/sec upstream. How much time will it take to cross a distance of 332.68 m in still water?
(i)
23.28 sec
(ii)
26.28 sec
(iii)
25.28 sec
(iv)
27.28 sec
(v)
24.28 sec
Question
11
11.
The speed of a motor boat is 31.68 m/sec and the speed of a stream is 22.94 m/sec. A & B are two location adjacent to a stream. If it takes 488.16 sec to go from point A to B and come back, What is the distance between A and B?
(i)
3675.99 m
(ii)
3677.99 m
(iii)
3678.99 m
(iv)
3676.99 m
(v)
3679.99 m
Question
12
12.
The speed of a motor boat is 11.88 m/sec and the speed of a stream is 6.14 m/sec. A & B are two location adjacent to a stream. If the distance between A and B is 3665.00 m, how much time will it take to go from A to B and back to A?
(i)
841.89 sec
(ii)
840.89 sec
(iii)
843.89 sec
(iv)
842.89 sec
(v)
839.89 sec
Question
13
13.
The distance between two places X and Y is 241.68 m. Two persons A and B start simultaneously at X and Y at speeds of 24.12 m/sec and 5.65 m/sec respectively. Find when they meet each other if they are travelling in same direction.
(i)
11.09 sec
(ii)
12.09 sec
(iii)
15.09 sec
(iv)
13.09 sec
(v)
14.09 sec
Question
14
14.
The distance between two places X and Y is 377.88 m. Two persons A and B start simultaneously at X and Y at speeds of 20.97 m/sec and 7.41 m/sec respectively. Find when they meet each other if they are travelling in opposite direction.
(i)
15.32 sec
(ii)
14.32 sec
(iii)
13.32 sec
(iv)
12.32 sec
(v)
11.32 sec
Question
15
15.
The distance between two places X and Y is 138.95 m. Two persons A and B start simultaneously at X and Y at speeds of 8.75 m/sec and 4.44 m/sec respectively. Find the meeting point away from X where they meet each other if they are travelling in same direction.
(i)
284.09 m
(ii)
282.09 m
(iii)
283.09 m
(iv)
281.09 m
(v)
280.09 m
Question
16
16.
The distance between two places X and Y is 473.70 m. Two persons A and B start simultaneously at X and Y at speeds of 20.56 m/sec and 14.74 m/sec respectively. Find the meeting point away from X where they meet each other if they are travelling in opposite direction.
(i)
275.90 m
(ii)
276.90 m
(iii)
273.90 m
(iv)
277.90 m
(v)
274.90 m
Question
17
17.
In a 2200 m race, A beats B by 879.98 m and C by 1289.66 m. In a 4300 m race, by how much distance does B beat C?
(i)
799.75 m
(ii)
801.75 m
(iii)
800.75 m
(iv)
802.75 m
(v)
798.75 m
Question
18
18.
'P' and 'Q' are at a distance of 510.00 km apart. 'A' starts from 'P' at 07:18 AM and reaches 'Q' at 01:06 PM. 'B' starts from 'Q' at 11:51 AM and reaches 'P' at 05:49 PM. Find the distance between point P and the point where they overtake each other.
(i)
456.14 km
(ii)
455.14 km
(iii)
454.14 km
(iv)
457.14 km
(v)
458.14 km
Question
19
19.
'P' and 'Q' are at a distance of 410.00 km apart. 'A' starts from 'P' at 07:10 AM and reaches 'Q' at 11:17 AM. 'B' starts from 'Q' at 10:13 AM and reaches 'P' at 06:12 PM. At what time they overtake each other?
(i)
11:55 AM
(ii)
09:55 AM
(iii)
10:25 AM
(iv)
11:25 AM
(v)
10:55 AM
Assignment Key
1) (v)
2) (i)
3) (i)
4) (iii)
5) (v)
6) (ii)
7) (iii)
8) (iv)
9) (v)
10) (iii)
11) (ii)
12) (i)
13) (iv)
14) (iii)
15) (ii)
16) (i)
17) (iii)
18) (i)
19) (v)