Hey there!
If you're working with Newton's Laws / Acceleration, the formula would mostly like look like this
or you could say →
While the
variable represents
of your car and the
represents the mass of the car 
Denominator: 
Numerator: 
Your equation:
( if you simplify that ←) then you have found your result!

Good luck on your assignment and enjoy your day!
~
Answer:250N
Explanation:
Spring constant=500N/m
Extension=0.5m
Weight=spring constant x extension
Weight=500 x 0.5
Weight=250
Weight is 250N
The approximate height of the tsunami in Alaska in 1958 is 1720ft
Answer:
The principle of superposition states that when a number of charges are interacting, the net electrostatic force a given charge is the vector sum of the forces exerted on it due to all other charges. The force between two charges is not affected by the presence of other charges.
Answer:
A) a scientific theory or principle
Explanation:
A Theory or principle has to explain different observations for a specific phenomenon. Theories are tested in base of new data to see if they can fit with all the new variations. They gain more acceptance in the scientific world if they predict in a correct way the result of many observations.
For example the uncertainty principle which state that the position and the momentum of a particle can not be known at the same time. Many experiments that aim to test the Uncertainty principle demonstrated this property, but tests are currently being done with other variations to see if the principle still fits with them.