Which surface provides the least amount of friction?
-Tile
-Grass
-Ice
Ice
What are the 2 types of forces that act on an object?
push and pull
What 2 pieces of information do we need in order to calculate speed?
time and distance
X axis: Time
Y axis: Distance
-Tile
-Ice
-Grass
Grass
Jack pushes a tennis ball across a table. What could he do if he wants the tennis ball to travel faster and farther?
Push with more force
A biologist is observing a flying bird. The bird flies 5 miles. If the biologist wants to figure out the bird's speed, what other information does she need?
The amount of time the bird is flying.
What do we know about the speed of all 3 objects on this graph?
The speed remains constant
Kenny pushed a box to the left. In which direction is friction "pushing"?
(up, down, left, or right)
It will travel faster and farther.
Todd drove from Raleigh to Wilmington in 2 hours. What else does Todd need in order to figure out his speed for the trip?
How many miles he drove (the distance)
Which object is moving the fastest?
Which object is moving the slowest?
Slowest: C
What is another name for "air friction"? This is what causes falling objects to slow down.
A car and a semi-truck are both traveling 70 miles per hour on the highway. If both drivers press the brake with the same force, which vehicle will take longer to slow down AND why?
The truck, because it has more mass.
Sheila and Lily both left school at 3:30pm to go to the park (following the same route). Sheila rode her bike at a speed of 10 miles per hour, while Lily rode her bike at a speed of 12 miles per hour. Who will reach the park first?
Lily
What is the object doing between 5 and 10 seconds?
The object is stopped.
Friction transfers motion energy into which 2 types of energy?
heat and sound
Shopping Cart B: 32 pounds
Shopping Cart C: 52 pounds
Shopping Cart D: 26 pounds
Which cart will require the most amount of force to push? Which cart will require the least amount of force to push?
Most: Cart C
Least: Cart A
Ball A rolls 10 feet in 3 seconds. Ball B rolls 10 feet in 5 seconds. Which ball is more likely to roll farther?
Ball A
Based on the following data, create a distance/time graph to show the motion of a flying bird.
(created graph)