Answer:
4.8min
Explanation:
The police car is traveling at 100/km and is 1.6km away from red car that is traveling at 80/km
Motion of solids, liquids, and gases may be compared with the motion of marbles in a tray: molecules of solids do not move one relative to each other, like the marbles in a tray full, molecules of liquids are like marbles in a tray with many marbles but no full, and molecules in gases are like a few marbles in a tray.
As you can imagine, as the tray has less empty space (the molecules are closer and tighter) the marbles cannot move freely, which is like the molecules of a solids which cannot move one relative to each other; when the tray has some room to move, the marbles can move better, which is like the molecules of a liquid, and when there is plenty space for marbles to move in the tray is like the molecules of gases which move freely without interacting among them.
Answer:
4000J
Explanation:
Given parameters:
Weight of the man = 800N
Height of ladder = 5m
Unknown:
Gravitational potential energy gained = ?
Solution:
The gravitational potential energy is due to the position of a body.
Gravitational potential energy = weight x height
Now insert the parameters;
Gravitational potential energy = 800 x 5 = 4000J