Law of Inertia
This is the specific name of the law expressed by the formula F=G(m1m2/d2)
What is the Universal Law of Gravitation?
In the formula F=ma, airbags are designed to lower F by specifically increasing this factor.
What is time?
This is the mathematical formula used to calculate an object's momentum score (p).
What is p=mv (Mass x Velocity)?
Newton's Third Law states that every action force has a reaction force that is both equal and this.
What is opposite?
Newton's First Law explains why a passenger continues to move at this speed even after their car hits a wall and stops.
What is the car's original speed?
Astronauts on the ISS appear to float because they are in this state, falling toward Earth at the same rate as their station.
By increasing the time it takes for a head to stop, airbags successfully can cause a decrease in this.
What is acceleration?
If two vehicles have the same momentum, but one is a heavy truck and the other is a light car, the car must have a higher what?
What is velocity?
Action and reaction forces never cancel each other out because they are always doing this.
What is acting on different objects?
This physical quantity is a measurement of the actual amount of matter in an object and does not change based on location.
What is mass?
If you increase the distance between two objects, the force of gravity does this.
What is decrease exponentially?
This safety device is designed to face backward to distribute impact across the strongest part of an infant's body.
What is a rear-facing car seat?
This is the product that must be equal for two objects of different sizes to share the same momentum score.
What is mass times velocity?
If your foot applies an action force to a soccer ball, the ball applies a reaction force to this.
What is your foot?
While mass is constant, this value fluctuates depending on the strength of the local gravitational pull.
What is weight?
This is the resulting force if you move an object to half its original distance from a planet.
What is four times the original force?
Car seats use their entire shell to act as this type of force, preventing the impact from isolating on the baby's neck.
What is unbalanced force?
A rocket is able to accelerate in space because it gains forward momentum by pushing against this.
What is its own exhaust gas?
This is the common misconception about how rockets move in the absolute nothingness of space.
What is they push against the atmosphere?
If you traveled to the Moon, this is the reason your mass would remain exactly the same as it was on Earth.
What is mass is the amount of matter, which does not change?
The reason astronauts don't actually hit the Earth while in free fall is because they are moving at the same rate as this vehicle.
What is their shuttle?
What is the skull?
As exhaust gas gains massive backward momentum, the rocket gains this.
What is equal forward momentum?
Because space is a vacuum, a rocket must carry its own reaction mass in the form of this.
What is exhaust gas?