Answer: the answer is D
If the distance of the track is 100 cm and it takes the marble 5 seconds to go from beginning to end, what is the speed ?
Explanation:
speed = distance ÷ time
= 100 cm ( 1 meter ) ÷ 5 seconds
= 20 cm/s
= 0.2 m/s
Cumulonimbus clouds are associated with what type of weather?
Question 2 options:
Stormy
fair
windy