Monday, February 16, 2015

6th Science - 2/16/15


https://docs.google.com/document/d/1RAUiXzb4zy9hZCCH4uW6HrvTT3S3W4KX6lT0cKwUn_M/pub

Homework

2/18 - Copy vocabulary words in NB

1. force - is any interaction which tends to change the motion of an object. In other words, a force can cause an object with mass to change its velocity

2.  friction - force that resists the sliding or rolling of one solid object over another. Frictional forces, such as the traction needed to walk without slipping.

3.  drag force -  is the resistance force caused by the motion of a body through a fluid, such as water or air. A drag force acts opposite to the direction of the oncoming object.

4.  gravity - is the force that causes two particles to pull towards each other. Learn about gravity and find out how Newton and Einstein explain gravity.

5.  net force -  is the amount of force that is making the object change direction or motion.

6.  balanced force -  is when two equal forces are applied on an object pushing both ways. Also they are equal forces acting on an object in opposite directions.

7.   unbalanced force - when two forces acting on an object are not equal in size. Unbalanced forces causes can cause.

8.  inertia - a property of matter by which it remains at rest or in uniform motion in the same straight line unless acted upon by some external forces.

9.  velocity - the rate of change of position along a straight line with respect to time :  the derivative of position with respect to time


10. average speed - It is distance traveled over time. Speed may vary on a trip, so those numbers are averaged to come up with average speed.