First Law
Second Law
Third Law
Second Law Calculations
Third Law Calculations
100
The property of matter that resists changes in motion.
What is inertia.
100
Changes in motion come from this.
What are unbalanced forces?
100
For every action force there is an equal and opposite...
What is reaction force?
100
A toy car with a mass of 2 kg is moving in a straight line at the same speed as a toy car with a mass of 8 kg. Both balls are brought to rest in 4.0 seconds. Which toy car requires more force to stop it?
What is the toy car with a mass of 8 kg? (Because it has more inertia.)
100
I am pushing on a shopping cart with 20 N of force. This is the action/reaction force pair.
What is my hand pushing on the cart handle and the cart handle pushing on my hand?
200
As the mass of an object decreases, this is what happens to its inertia.
What is it decreases?
200
If a 40 kg runner and a 50 kg runner both accelerate at 2 m/s/s out of the starting block and continue this acceleration for the entire 100 m race, who will win?
What is they will tie?
200
What keeps a 400 N person from falling through the ground?
What is a normal force of 400 N?
200
If I push on an empty shopping cart with 4 N of force and Nate pushes on another empty shopping cart with 8 N of force, which will accelerate faster and by how much?
What is Nate's cart will accelerate twice as fast as my shopping cart?
200
A 2000 kg car runs head on into a 3000 kg car. The 2000 kg car experiences a force of 20,000 N. This is the force that the 3000 kg car experiences.
What is 20,000 N but in the opposite direction? (The forces are equal and opposite.)
300
Which is harder to move, a 20 kg box or a 50 kg box?
What is a 50 kg box?
300
The force unit of newtons is based on these.
What are kilograms, meters, and seconds?
300
Momentum depends on these two factors.
What is mass and velocity?
300
If I hit a 5 gram ping pong ball and it accelerates at 20 m/s, how much force did I use?
What is 0.1 N? (You MUST convert grams to kilograms!)
300
This is the momentum of a 200 g cat running at 7 m/s.
What is 1.4 kg m/s?
400
This is a force that opposes motion.
What is friction?
400
Acceleration is inversely proportional to this.
What is mass?
400
Which is harder to stop, a 40 kg ball rolling at 2 m/s or a 30 kg ball rolling at 3 m/s?
What is a 30 kg ball rolling at 3 m/s? (It has more momentum.)
400
If using 50,000 N of force gets a truck to accelerate at 10 m/s/s, what is the mass of the truck?
What is 5000 kg?
400
This is the mass of a child with a momentum of 150 kg m/s who is running at 5 m/s.
What is 30 kg?
500
If an object has zero net force what happens to its velocity?
What is it remains constant?
500
This is any change in velocity.
What is acceleration?
500
This says that the total amount of momentum is constant as long as the interacting objects are not influenced by outside sources.
What is the law of conservation of momentum?
500
If I push on a 15 kg toy wagon with 20 N of force, how fast will it accelerate?
What is 1.3 m/s/s? (also 1.3 m/s2 but this program won't show superscript)
500
If a 5 kg ball traveling at 5 m/s hits a stationary 2 kg ball and the collision is perfectly elastic, this is how fast the 2 kg ball will travel.
What is 12.5 m/s? (The momentum of the 5 kg ball equals 5 kg x 5 m/s = 25 kg m/s. This momentum is fully transferred to the 2 kg ball. So 2 kg x ?? m/s = 25 kg m/s 25 kg m/s divided by 2 kg = 12.5 m/s)
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