alleryଏକ କାର ନିଶ୍ଚିତ ଭାବରେ 2 ଘଣ୍ଟାରେ 120 କିଲୋମିଟର ଅତିକ୍ରମ କରିବ | 40 କିଲୋମିଟର / ଘଣ୍ଟାରେ 40 କିଲୋମିଟର ପରେ, ଆବଶ୍ୟକ ଗତି?
A100 km/h
B80 km/h
C60 km/h
D90 km/h
Answer & Solution
Correct answer: B. 80 km/h
ପ୍ରଥମ 40 କିଲୋମିଟର 1 ଘଣ୍ଟା ନେଇଥାଏ, 80 କିଲୋମିଟର ଛାଡି 1 ଘଣ୍ଟାରେ ଘଣ୍ଟା ପ୍ରତି 80 କିଲୋମିଟରରେ ଗତି କରେ |
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Motion: combine the cluesMotion: choose the resultA boat’s still-water speed is 12 km/h. It covers 30 km downstream and 18 km upstream in 4 A 120 m train at 54 km/h overtakes a 180 m train moving the same way in 60 s. Slower trainTwo runners start together on a 400 m circular track at 5 and 3 m/s in the same direction.In a 200 m race A beats B by 20 m. A runs at 10 m/s. What is B’s speed?A boat moves at 12 km/h in still water; the stream is 3 km/h. Time for 27 km downstream anTrains 180 m and 220 m long move oppositely at 54 and 36 km/h. Time to cross completely?