Answer:
when an object move from its place is called an mation
Answer:
A heat engine is a device that converts internal energy into work. Internal energy is increased by the addition of heat. The efficiency of a heat engine is a measurement of how efficiently it works. Efficiency compares the amount of useful energy extracted from a process to the total energy input. The heat engine will be more efficient if the percentage is higher.
Explanation:
Here we know that



now from kinematics we have

now from above all values we have



so final angular speed is -12.6 rad/s