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Motion is the process of changing position. What does position mean?
Difference in where something started to where it ended up.
What is speed?
The time it takes something to travel a distance.
A ball is rolled down a ramp first at 12 cm, then again at 2 cm. Describe how the ball's motion is different at the lower height.
The ball takes more time to reach the bottom of the ramp.
A ball rolls down a ramp. Does friction eventually slow down the ball's speed?
Yes
A car rolls down a ramp. The car slows down because friction applies a balanced or unbalanced force at the end of the ramp?
Unbalanced
If speed = distance/time, What is the speed of a ball that travelled 20 cm in 10 seconds.
2 cm/sec
Elmo applies a force of 20 N to the left to a box. Grover applies a force of 50 N to the right on the same box. Describe the motion of the crate. (Force and direction)
30 N to the right
Mr. Starling applies a force of 20 N to the left on the desk. Ms. Clements applies a force of 20 N to the right on the same desk. Describe the motion of the crate. (Force and direction)
0 N (no direction)
Mass depends on ________________________
The amount of matter in an object
Weight depends on _____________________
gravitational force
Which has the greatest gravitational force, you or a monster truck?
monster truck
Gravitational forces depend on two thing. What are they?
mass and distance
If there was no air resistance, which would hit the ground first if they were thrown off the cliff at the same time, Big Bird or Elmo?
Neither, they would hit at the same time.
The farther an object is from Earth, the (greater or less) the gravitational attraction to Earth. Bonus points for the team that can draw this on a graph.
Less
If you cut a magnet in half, what will happen to the two pieces?
Each new piece will have both a north and a south pole.
What two things can effect the force of a magnet?
mass and distance
