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Question:

a crane 10 is moving across a frictionless surface at 3/s. if you wish to bring the crate to a stop, how much?

a 10 crane is moving across a frictionless surface at 4 m/s. if you wish to bring the crate to a stop, how much work would it need to do to dissipate all the kinetic energy?Physic

Answer:

What is a 10 crane? what is 3/s ? once you have numbers that mean something, plug them into the following equation Kinetic Energy in J if m is in kg and V is in m/s KE = ?mV?
If an object with mass 10kg is moving at x m/s it's Kinetic energy is ?mv? =?×10 kgm?/s? = 5x? Joules Example: 10kg @ 4m/s Ke = ? (10kg)× (4m/s)? = 80 Joules

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