
posted by Elena
Respond to this Question
Similar Questions

Physics
A helicopter winches up an injured person from a boat. The person plus equipment has a mass of 104 kg. If the height of the lift is 84 m and it is carried out at a uniform rate over 70 s, what is the power expended by the 
physics
A helicopter rescues a trapped person of mass m = 67.0 kg from a flooded river by lifting the person vertically upward using a winch and rope. The person is pulled 13.0 m into the helicopter with a constant force that is 11% 
physics
a person of mass 80 kg standing on a boat of mass 320 kg which at rest in still water the person is initially 12m from the shore the person walk on boat for 6 sec with a constant speed 1 m/s toward the shore and then stop distance 
math
The price per person of renting a boat varies inversely with the number of people renting the boat. It costs $20 per person if 27 people rent the boat. How much will it cost per person if 95 people rent the boat? 
Physics
A person can row a boat at a rate of 25 m/s in still water. The person heads the boat directly across a stream that flows at a rate of 9 m/s. Find the resultant velocity of the boat. 
physics
A rescue helicopter lifts a 85.2kg person straight up by means of a cable. The person has an upward acceleration of 0.764 m/s2 and is lifted from rest through a distance of 12.5 m. (a) What is the tension in the cable? How much 
physics
A rescue helicopter lifts a 85.8kg person straight up by means of a cable. The person has an upward acceleration of 0.643 m/s2 and is lifted from rest through a distance of 13.1 m. (a) What is the tension in the cable? How much 
Algebra
A coast guard helicopter receives a distress signal from a boat. the units (15,80) (55,38)represent miles. to the nearest minute, how long will it take the helicopter to reach the boat if the helicopter travels at an average speed 
Physics
A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much 
Physics
A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much