How many (whole number of) 91 kg people
2 answers:
Answer:
<h2>10 people.</h2>Explanation:
Gives
- The elevator can hold a maximum weight of 1 metric ton.
- 1 metric ton is equivalen to 1000 kilograms, or which is the same
.
- Each person weighs 91 kg.
To know the number of people that can safely occupy the elevator, we just need to divide
Therefore, around 10 people can safely occupy the elevator.
Notice that we can round the number to 11, because we cannot do that in real life with people. The decimal number is 10.98, but we there can't ve 10.98 people, because we can't have there a part of a person.
Therefore, the answer is 10 people.
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The figure shows the arrangement of system
The velocity of boat can be resolved in to two
Horizontal component = vcos θ = 2.50 cos 45 = 1.768 m/s
Vertical component = vsin θ = 2.50 sin 45 = 1.768 m/s
Due to horizontal component the boat arrive arrives upstream,
Total horizontal velocity = 1.768 - Vr, where Vr is the velocity of river.
Total time taken to cross the river = width of river/ Vertical component of velocity
t = 285/1.768 = 161.20 seconds
So 118 meter is traveled at a velocity of 1.768-Vr in 161.20 seconds
That is 118 = (1.768-Vr)*161.20
1.768 - Vr =0.732
Vr = 1.036 m/s
So velocity of river flow =1.036 m/s
