The answer is A a change in time
Answer:
a) .
b) .
Explanation:
a) What is the speed of the rock just before it hits the street?
From Kinematics we have .
If we take the top of the roof as the position , then
and we have (also, ) :
⇒
⇒ .
b) How much time elapses from when the rock is thrown until it hits the street?
From Kinematics we have
When the rock touches the ground:
With a minus sign to indicate the vector velocity points down.
(remember that )
B) Temperature.......... Hope it helps, Have a nice day :)
Answer:
True
Explanation:
Solids, Liquids, and Gases are all make up of <u><em>atoms and molecules. </em></u>
Answer:
Explanation:
conversion of 2.5 days to seconds
2.5 days =2.5 days*24 hours*3600 seconds
2.5 days=216000seconds
b) conversion of 25 km to mm
1 km=1000000 mm
therefore
25 km=25*1000000=25000000 mm
c) conversion 22 g to kg
1000 g=1 kg
therefore
22 g=22/1000=0.022 kg