Explanation:
The machine whose efficiency is 100% is known as perfect machine .This machine is not possible in real life because every machine is affected by the overcoming friction due to which is efficiency become less than hundred percent .
Answer:If kinetic energy increases, so does the thermal energy, and vice versa.
Please brainliest!
Force = mass × accelaration
Force = 0.25Kg × 196 m/s²
Force = 49 Newtons
