Answer:
car b
Explanation:
b is 2/3 of the way to 30 km an hour so that means its 20
Answer:
Always
Explanation:
Unbalanced forces means an acceleration, meaning a change in speed!
The velocity is 10m/s because velocity is calculated by dividing time from displacement so 5000 divided by 500 is 10.
An endothermic phase change would be vaporization. I say this because endothermic changes absorb heat or energy. When something vaporizes it is because it was boiled or evaporated, which contains absorbing heat.
An exothermic phase change would be freezing. Exothermic changes release heat or energy from its surroundings and when something is frozen, it does not contain heat, it releases its heat.
Hope this helps :)
The law of conservation of energy states that energy can never be created nor destroyed but it can be conserved or transferred
