**Answer:**

concave surface!

**Explanation: Hope This Helps :)**

**Answer:**

that is the awnser key if that is your work sheet

**Explanation:**

i hope it is right

**Kinetic energy: the energy of motion**

**Work: the change in kinetic energy**

**Power: the rate of work done**

**Explanation:**

The kinetic energy of an object is the energy possessed by the object due to its motion. Mathematically, it is given by:

where

m is the mass of the object

v is its speed

The work done an object is the amount of energy transferred; according to the energy-work theorem, it is equal to the change in kinetic energy of an object:

where

is the final kinetic energy

is the initial kinetic energy

Finally, the power is the rate of work done per unit time. Mathematically, ti can be expressed as

where

W is the work done

t is the time elapsed

Learn more about **kinetic energy, work and power:**

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