2 students are working to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table. If the force of friction resisting the studentโs push is 4 N, what is the net force acting on the board?
6 N
Oops!
Check
Okay!
Check
15
A car speeding up or slowing down is an example of what?
Acceleration
Oops!
Check
Okay!
Check
15
What is the formula for speed?
Speed= Distance/Time
Oops!
Check
Okay!
Check
15
A pencil falls off a desk that is 1.5 meters tall. If the pencil had a speed of 3 m/s, then how long did it take for the pencil to reach the ground?
.5 seconds
Oops!
Check
Okay!
Check
15
A train travels 25 km in .5 hrs. How fast is the train going?
50 km/hr
Oops!
Check
Okay!
Check
15
When do you add forces together?
When the forces are in the same direction
Oops!
Check
Okay!
Check
15
Potential or Kinetic: A pencil falls off the desk.
Kinetic
Oops!
Check
Okay!
Check
15
When do you subtract forces?
When the forces are in opposite directions
Oops!
Check
Okay!
Check
15
During a game of tug-a-war, neither team is able to make any advance. What can be assumed about the forces?
The forces are balanced
Oops!
Check
Okay!
Check
monster
Reset all scores!
Oops!
star
Double points!
Okay!
fairy
Take points!
5
10
15
20
25
banana
Go to last place!
Oops!
15
What is the law of conservation of energy?
Energy cannot be created or destroyed, only transformed.
Oops!
Check
Okay!
Check
monster
Reset all scores!
Oops!
shark
Other team loses 25 points!
Okay!
fairy
Take points!
5
10
15
20
25
thief
Give points!
5
10
15
20
25
15
What is the difference between the velocity and the speed of an object?
Velocity has a direction associated with it, while speed has no specific direction.
Oops!
Check
Okay!
Check
eraser
Reset score!
Oops!
seesaw
Swap points!
Okay!
rocket
Go to first place!
Okay!
baam
Lose 5 points!
Oops!
15
The chemical equation for sodium sulfate is Na2SO4. How many sulfur atoms are in the formula for sodium sulfate?