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An engineer is designing the runway for an airport. Of the planes that will use the
airport, the lowest acceleration rate is likely to be 3 m/s2. The takeoff speed for this
plane will be 65 m/s. All airplanes will start from rest. Assuming this minimum
acceleration, what is the minimum allowed length for the runway?
v2v ²+2ad
VaVota:
d=v0t+1/2012
d=1/2(V+V.)
MB

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j ?

I'm kinda lost ! 1. when marilyn takes her pet dog for a walk, the dog walks at a veryconsistent pace of 0.55 m/s. draw a position-time graph to representmarilyn's dog walking the 19.8 m distance from the front of her house tothe nearest fire hydrant.2. both car a and car bleave school when a stopwatch reads zero. car atravels at a constant 75 km/h, and car b travels at a constant 85 km/h.a) draw a position-time graph showing the motion of both cars. howfar are the two cars from school when the stopwatch reads 2 hrs? calculate the distances and show them on your graph.b) both cars passed a gas station 120 km from the school. when dideach car pass the gas station? calculate the times and show themon your graph.3. the figure below shows the position-time graph showing a shopper'smovement up and down the aisle at a store.a) write a story describing the shopper's movements at the store.b) when does the shopper have a position of 6 m? c) how much time passes between when the shopper enters the aisleand when he gets to a position of 12 m? what is the shopper's averagevelocity between 37 s and 46 s?

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering