They say no one can hang for more than 1 second, not even MJ. However, if you can, what would be the jump height?

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You are playing a game and you push a cart to give it in. speed. The cart starts at the bottom (zero) of a ramp and after reaching the top of the ramp, the cart travels across a horizontal track w/ friction. The mass of the cart is 44 x 10^-3 kg. The ramp is 56 cm high. The length is 70 cm. What can you infer of the intial speed in (m/s)

A 12.5 kg box sits on a shelf that is 1.8 m high. If it is dropped, how fast will it be going just before it hits the ground?     m/s

A child of mass 26 kg , is sliding down a water-slide that has an angle of 32 deg. If the water lubricates the slide to a frictionless surface, and the slide is 9 meters long.  What is the child's velocity at the bottom?

If a 3.73 kg object is placed on a frictionless incline of 67.3 ° and released from rest, what is speed of the object down the incline after traveling a distance of 1.18 m? Enter a number rounded to 2 decimal places and assume it has proper Sl units.