Newton's Laws!
Outerspace!
Science of Sports!
Collisions!
Surprise!
100
Inertia only depends on 1 thing: What is it?!?!
MASS!
100
What year did Neil Armstrong step onto the moon?
1969
100
If a figure skater wants to spin very quickly and not topple over, what does she do? Explain how this is related to science!
GET LOW - center of gravity!
100
What is the mass of an object that is moving at 4 m/s and has a momentum of 100 kg m/s?
25 kg
100
a 30 kg box is sitting on the floor. What is its momentum?
ZERO - not moving = no momentum!
200
Newton's 2nd Law says that Force = m x a. Fill in the equation triangle. Put the symbol AND unit in every spot
F (N) mass (kg) acceleration (m/s/s)
200
What is the force that pulls things towards the center?!
Centripetal Force
200
List 4 professional sports teams that play in New York
Lots!
200
Car A has a momentum of 45 kg m/s. Car B has a mass of 40 kg and a speed of 30 m/s. What is the total momentum of both cars?
1245 kg m/s
200
What are the units for speed, acceleration and momentum?
m/s m/s/s kg m/s
300
How old was Isaac Newton when he first became a college professor?!
27 years old!
300
Astronauts had to wear a very fancy spacesuit when they walked on the moon. How many pounds did this suit weigh (on Earth?)
130 pounds
300
When Michael Phelps pushes off his blocks to jump into the pool, he is a perfect example of one of Newton's Laws. Which law?! Draw a diagram showing what is happening to get Michael into the pool!
Newton's 3rd Law! action + reaction forces
300
What has more momentum, a 4 kg cart traveling 11.5 m/s or a 30 kg cart traveling 3 m/s?
the 30 kg cart!
300
What is the difference between inertia and momentum?
INERTIA only depends on MASS MOMENTUM depends on MASS and ACCELERATION!
400
Draw a picture of a person using an oar in a row boat to push water. Which way will the boat move? Explain your thinking!
Newton's 3rd Law - oar pushes water, water pushes oar!
400
Besides gravity, what is holding the moon in orbit?
INERTIA!
400
A basketball bounces off the ground with an acceleration of 0.4 m/s/s. If the force pushing the ball is 1.1 N, what is the mass of the ball?
2.75 kg
400
A 25 kg cart that is traveling at 2 m/s hits a 50 kg cart that is not moving. The carts stick together. What is their momentum AFTER the crash?
Momentum is conserved!!! Still 50 kg m/s
400
The conservation of momentum law is only true is something is ABSENT (or missing). What must be missing for conservation of momentum to occur?
FRICTION
500
Briefly describe each of Newton's 3 Laws.
1st Law: inertia 2nd law: F = ma 3rd law: action and reaction
500
How many MILES wide is the largest crater on the moon?
144 miles wide!
500
If you hit a 0.2 kg golf ball with a force of 13 N, what is its acceleration?
65 m/s/s
500
A 35 kg boy is sledding at a speed of 4 m/s. He crashes into his little sister. The boy transfers ALL of his momentum to the girl. The little sister is 25 kg. What is her speed after the crash?
total momentum before: 140 kg m/s girl travels 5.6 m/s
500
The moon always travels at the same speed. Is it accelerating? Explain why using at least 2 science terms.
YES - the moon is a satellite that is circling the Earth. It is constantly changing direction. Acceleration is any change in direction or speed. So yes, it is accelerating!
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