Answer:
it is a scientific model if you want to research where in the world is vegetation located.
Answer:
KE + PE = KE + PE
Explanation:
In a closed system, the mechanical energy of the system is constant.
Mechanical energy is given by the sum of kinetic energy and potential energy; mathematically:
U = KE + PE
where
KE is the kinetic energy
PE is the potential energy
This means that if we consider two situations, one at the beginning and one at the end, the value of U will not change if the system is closed; this means that the sum KE + PE will remain the same, so we can write:
KE + PE = KE + PE
Answer: 90000 kgm/s
Explanation:
Given that,
Momentum of car = ?
Mass of car = 1,5000 kg
Velocity of car = 6 m/s
Recall that momentum is the product of mass of the moving object by its velocity
i.e Momentum = mass x velocity
Momentum = 15000kg x 6m/s
= 90000kgm/s
Thus, the momentum of the car is 90000 kgm/s
