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If a right angled triangle label A B C and A=3 B=4 what is C equal to

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A spring (k = 764 N/m) is attached to the ceiling of an elevator. How much will the spring stretch (relative to its unstretched length), if a 6.6 kg object is attached to the lower end and the elevator is accelerating downward at 0.41 m/s2?

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Parachutists bend their legs and roll with the fall on landing. They do this to reduce the chance of injury. Explain why this technique means that they are less likely to suffer broken bones on hitting the ground?

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Sally travels by car from one city to another. She drives for 29.0 min at 52.0 km/h, 31.0 min at 30.0 km/h, and 27.0 min at 56.0 km/h, and she spends 10.0 min eating lunch and buying gas.

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Jake walks east through a passenger car on a train that moves 10 m/s in the same direction. Jake’s speed relative to the car is 2 m/s. Jake’s speed relative to an observer at rest outside the train is?

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If a boat can motor 2.3 m/s in still water, and it attempts to cross a river with a current of 1.5 m/s, what will be the boat's velocity relative to the shore?

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the velocity of a body moving in straight line with a constant acceleration is 10 m/s at a certain instant "t". After 5 secs the velocity becomes 20 m/s, the velocity 3 secs before t was?

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the speed of train is reduced from 60 km/hr at the same time as it travels a distance of 450 m. if the retardation is uniform,find how much further it will travel (approx) before coming to rest?

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This is the question and i need to know the formula and the steps.."A car's airbag will activate and increase the stopping time of a passenger from 1.0 x 10-2s to 3.0 x 10-1s. If the person in the car has a mass of 70.0kg and the car is travelling at 100km/h (approximately 28 m/s), determine the magnitude of force that the person will exert on the airbag. I am not the greatest with this kind of thing so any help is much appreciated..

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If the magnitude of two vectors are 40N and 20N. What should be their orientation to get 30N force as a resultant ?

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