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a bus moves from rest with a uniform acceleration of 2ms² for the first 10 seconds. it then accelerate at a uniform rate of 1ms² for another 15seconds. it continues at a constant speed for 70seconds and finally came to rest in 20seconds by uniform acceleration. calculate the average retardation as the body is brought to rest
At a lab investigating fire extinguisher foams, a heavy ball is accidentally dropped into a deep vat of foam from a crane 5.30m above the foam. After entering the foam, it sinks to the bottom with a constant velocity equal to the velocity with which it hit the foam. The ball reaches the bottom 3.60 s after it is released. How deep is the vat?
A glass of water is filled to a height of 0.500 ft. Find the hydrostatic pressure at the bottom of the glass.
A slack rope walker balances on a rope tied between two trees. For a short, he is not moving. His mass is 72 KG. The rope makes an angle of 22 degrees with the horizontal on either side . What is the magnitude of the Tension in the rope ?
