Question

Q8: Every floor of a 30 storey building is 4m high. A lift moves 2m per second. He
long will it take to move from 5th floor to 28th floor?​

Answer 1

Initial floor is 5th floor

Final floor is 28th floor

Total floors involved are

28 - 5 = 23 floors

Height of 1 floor is 4 m

Effective height of 28 floors is

4 × 28 = 112 m

Speed is 2 m/s

Time = distance / speed

= 112/2 = 56 seconds

I think it's correct

:-)

Answer 2

• Answer:
• Answer:initial floor - 5
• Answer:initial floor - 5final floor - 28
• Answer:initial floor - 5final floor - 28total floor -
• Answer:initial floor - 5final floor - 28total floor -28-5 = 23
• Answer:initial floor - 5final floor - 28total floor -28-5 = 23height of 1 floor is 4 m
• Answer:initial floor - 5final floor - 28total floor -28-5 = 23height of 1 floor is 4 mTotal height of 23 floors
• Answer:initial floor - 5final floor - 28total floor -28-5 = 23height of 1 floor is 4 mTotal height of 23 floors= 4×23
• Answer:initial floor - 5final floor - 28total floor -28-5 = 23height of 1 floor is 4 mTotal height of 23 floors= 4×23= 92
• Answer:initial floor - 5final floor - 28total floor -28-5 = 23height of 1 floor is 4 mTotal height of 23 floors= 4×23= 92speed is 2 m/ s
• Answer:initial floor - 5final floor - 28total floor -28-5 = 23height of 1 floor is 4 mTotal height of 23 floors= 4×23= 92speed is 2 m/ sTime= d/speed
• Answer:initial floor - 5final floor - 28total floor -28-5 = 23height of 1 floor is 4 mTotal height of 23 floors= 4×23= 92speed is 2 m/ sTime= d/speed= 46 sec