Explain why a sailing boat will slow down if the wind speed gets less

When the wind begins to slow, so does the force behind it. A sailboat moves using the force that the wind puts upon the sail. As the wind subsides the sail will not be able to move the weight of the boat as well as it could when the wind was hitting the sail with greater amounts of force.

carla slowed down in the beginning of her trip, stopped, and then sped up

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.