6. Intro to Forces (Dynamics)

According to Newton's First and Second Laws ($F=ma$), how does friction affect the motion of an object moving on a horizontal surface?

A box is being pushed across a horizontal surface. If the applied force is $22N$ to the right and the net force acting on the box is $18N$ to the right, what is the force of friction acting on the box?

A ball is shot vertically upward from a compressed-air gun at twice its terminal speed. Neglecting air resistance on the way up, what will be the speed of the ball when it returns to its starting point, assuming air resistance acts only on the way down and the terminal speed is $v_t$?

If the two loops in (figure 1) have equal currents in opposite directions, which of the following statements about the net force between the loops is correct?

According to Newton's First Law, if you are driving in the middle lane on a three-lane expressway and a car begins to pass you on the right, what will happen to your car's motion if you do not apply any force to the steering wheel or pedals?

Which of the following is the best example of Newton's First and Second Laws affecting your daily life?

Which of the following best explains Newton's Second Law?

According to Newton's First and Second Laws, what is most likely to happen if you stop swinging a shotgun immediately after pulling the trigger while tracking a moving target?

You can minimize the effect of $\mathrm{inertia}$ on your body while driving by:

All except one of the following require the application of a net force. Which one is the exception?

According to Newton's First and Second Laws, what is always true when a net force is applied to an object?

Two objects of different masses are released from rest at the same height, one sliding down a frictionless incline and the other falling freely. According to $\text{Newton's First and Second Laws}$, what can be said about the speeds of the two masses at the bottom of their respective paths?

According to Newton's $1^{\text{st}}$ and $2^{\text{nd}}$ Laws, why does the bowling ball continue to move after Dr. Hewitt lifts it and gives it a push?

According to Newton's First and Second Laws, which forces are primarily responsible for controlling the motion of everyday objects?

According to Newton's First Law, what is the net force acting on an object if all the forces on it are balanced?