Motion
Mass and Motion
Net Force
Friction
Miscellaneous
100
Kinetic energy is __.
the energy of motion
100
What is mass?
the amount of matter (stuff) inside of something
100
Any push or pull that causes an object to move, stop, or change speed or direction is called _____.
a force
100
A force that opposes motion is called ___.
friction
100
What tool measures distance traveled?
ruler/meter stick
200
Describe an example of kinetic energy.
anything that moves
200
Which object requires the LEAST force to move?
8 kg weight
200
What is the combination of all the forces acting on an object called?
net force
200
Which would have greater friction: smooth aluminum foil or wrinkly aluminum foil? Why?
wrinkly foil because there are more bumps which increase friction
200
Is this object traveling at an increasing, decreasing, or constant speed?
constant; same distance over same amount of time
300
Describe the motion of the ball. Address both parts of motion.
moving quickly downwards
300
Which object requires the MOST force to move?
the 32 kg object
300
What is an example of an object that has a net force of 0?
any object at rest (not moving)
300
Which surface would most likely create the greatest friction when an object moves across it: ice, wet floor, or carpet.
Carpet
300
Is this object traveling at an increasing, decreasing, or constant speed?
increasing
400
What two things describe motion?
direction and speed
400
A golf ball and a ping pong ball are flicked with the same force. Which ball will roll the farthest? Why?
The ping pong ball because it has less mass and requires less force to move.
400
A soccer ball is kicked across the field. What forces are acting on the ball?
Push from the kick, friction from grass, gravity
400
On which surface does the cart encounter the LEAST friction? How do you know?
The glass surface because it travels the farthest
400
A student rolls a cart down the ramp onto different surfaces to see how friction affects the distance a cart travels. What is the dependent variable in this experiment?
the distance the car travels
500
Demonstrate a change in motion
Student should change their direction or speed
500
Two 5th grade students are sitting in a boat on the water. The weight of the boat is pushing on the water and the water has an upward force on the boat. What will most likely happen if another student gets in the boat?
The boat will sink deeper into the water
500
What has a greater net force: An object that is moving 3 mph or an object moving 5 mph?
5 mph because the faster the acceleration the higher the force.
500
Mr. Jones's driveway is very icy. He pours a bag of sand over the ice. The sand does not melt the ice. Why would he do this (scientifically)?
Sand increases the friction and will make the ice less slippery.
500
A student rolls a cart down the same ramp onto different surfaces. What is the independent variable the students is studying?
the type of surface the cart rolls on to