6. Intro to Forces (Dynamics)

Francisco is holding two magnets close to each other. According to Newton's First and Second Laws, what will happen when he lets go of the magnets?

According to Newton's First and Second Laws, what can be said about the net force acting on a helicopter as it descends at a constant speed until it reaches the ground?

According to Newton's laws, when an object rests on a horizontal surface, its weight ($W$) is opposed by which force?

According to Newton's First and Second Laws, will balanced forces acting on an object result in $a$cceleration?

According to Newton's First Law, what will happen to an object at rest if $\text{balanced forces}$ act on it?

Which term refers to an object's resistance to any change in its motion according to $N’s^1 Law$?

According to Newton's First Law, what happens to the motion of an object when the forces acting on it are balanced ($F=0$)?

According to Newton's First and Second Laws, which of the following best explains how a hot air balloon controls its direction in flight?

Which of the following best describes Newton's Second Law of Motion?

According to Newton's First and Second Laws ($F_{\mathrm{net}}=ma$), what causes a baseball to accelerate when a pitcher throws it during the pitching motion?

According to Newton's First and Second Laws, vehicle skids are most likely to be caused by which of the following conditions?

Emmett is lifting a box vertically. Which forces must be considered to calculate the total force acting on the box?

Three crates with different masses are placed on a frictionless surface and connected in a line by light ropes. If a constant horizontal force $F$ is applied to the first crate, what is the acceleration of the system?

Which of Newton's laws is defined by the equation $F=ma$?

A ceiling fan is rotating at an initial speed of $v=5.0m/s$ at the tip of its blade. The fan is turned off at time $t=0$ and slows down due to friction, experiencing a constant angular deceleration. According to Newton's First and Second Laws, what is the speed of the tip of the blade $10$ seconds after the fan is turned off, assuming no other forces act on it?