Answer:
Average speed = 0.0075 m/s
Average velocity = 0.0025 m/s along forward direction
Explanation:
Speed is the ratio of distance and time and velocity is the ratio of displacement and time.
Distance traveled = 10 + 5 = 15 cm = 0.15 m
Displacement = 10 - 5 = 5 cm = 0.05 m
Time = 20 seconds
Average speed = 0.0075 m/s
Average velocity = 0.0025 m/s along forward direction
They can be the same shape & size but they can have different mass. And mass is density so if they have different masses then they have different densities.
MASS=DENSITY
If it runs 6 miles in half an hour multiply 6 by two then there is your answer
Volum at the beginning:
Volum at the end:
α for helium =
As the result you get:
Final volume of the balloon is 22,9264 liters.
(Only if it doesn't explode during being heated ;) just a joke)
