In 1842, Julius Robert Mayer discovered The law of conservation of Energy. It its most compact form, it it now called The first law of Thermodynamics
Energy can neither be created nor destroyed, it can only be changed to another form of energy.
F=ma
F = 148×(85-35)÷20
F = 148×(50÷20)
F = 148×2.5
F = 370N
Answer: A while driving a car. It is unsafe
Approximately 100-120 wolves
The answer is C. <span>Light travels at different speeds in water and in glass.</span>
