6. Intro to Forces (Dynamics)

Which of the following best explains why a seesaw is considered a first class lever according to $Newton’s$ laws?

According to Newton's First Law, what happens to a box if equal and opposite forces act on it at the same time?

A block is initially held at position $x=a$ on a frictionless horizontal surface and then released from rest. According to Newton's First and Second Laws, after the block is released from $x=a$, it will:

According to Newton's First and Second Laws, which type of force will cause a change in an object's motion?

When Marie pushes her desk to the right, friction between the floor and the desk acts toward which direction?

According to Newton's First Law, when you change directions or speed too rapidly, the inertia of the vehicle will cause it to become:

Including reaction time, the stopping distance of a car traveling at speed $v$ is the total distance the car travels while the driver reacts and while the brakes are applied. Which of the following expressions correctly represents the total stopping distance, given a reaction time $t_r$ and a constant braking acceleration $a$ (with $a$ positive)?

An object with a mass of $3kg$ is accelerating at $2m/s^2$. What is the net force acting on the object?

Which of the following scenarios best illustrates unbalanced forces according to Newton's First and Second Laws?

Which of the following statements about a metal wire in equilibrium is correct?

According to Newton's First and Second Laws, what happens when an unbalanced force acts on an object?

Which of the following best describes an application of Newton's law of inertia ($F=ma$)?

According to Newton's First and Second Laws, unbalanced forces always result in $\_\_\_\_\_\_\_\_\_\_\_$.