Constant speed along the inclined surface = 30 m / 4 s = 7.5 m/s
Vertical speed = inclined speed * sin(45) = 7.5 *√2 / 2 = 5.3 m/s
Answer: 5.3 m/s
The temperature of the air above it
Atoms of the same element having equal numbers of protons, but different numbers of neutrons is called isotope.
