6. Intro to Forces (Dynamics)

A woman stands on a scale in an elevator that is accelerating upward. Compared to her weight $W$ when the elevator is at rest, what does the scale read while the elevator accelerates upward?

If an $80kg$ passenger rode along in a car that accelerated at $2.5m/s^2$, what net force would act on the passenger according to Newton's Second Law?

A vertical pull of a heavy cable from the top down is likely to require a force that is at least equal to which of the following quantities?

In which of the following situations do $Newton’s$ laws of motion not apply?

Which of the following situations involves unbalanced forces acting on an object?

Which historical figure developed the universal laws of motion?

A $2.00 \mathrm{kg}$ box is acted upon by two forces: a $10.0 N$ force to the right and a $4.0 N$ force to the left. What is the acceleration of the box?

According to Newton's laws, what is the SI unit of force?

According to Newton's First Law, what must be specified in order to determine whether or not an object is moving?

According to Newton's First and Second Laws, air bags in cars are designed to deploy at speeds up to what value in order to effectively reduce the force experienced by passengers during a collision?

According to Newton's First Law, what is the relationship between an object's $mass$ and its $inertia$?

According to Newton's First and Second Laws, what is the primary factor that causes an object to change its state of motion (move or stay still)?

When three blocks connected by light strings are released from rest on a frictionless horizontal surface, which of the following statements about their acceleration is correct?

Which of the following statements about braking a car is true according to $N{e}^{1}wton’s$ First and $S^{2}econd$ Laws?

According to Newton's Second Law, what are the dimensions of force in terms of $mass$, $length$, and $time$?