6. Intro to Forces (Dynamics)

According to Newton's Third Law, which statement best describes the forces involved when two objects interact?

A horizontal rope is tied to a 50 kg box on frictionless ice. What is the tension in the rope if: The box moves at a steady 5.0 m/s?

Pam is moving to the right on a horizontal surface. Which of the following forces can act on her as she moves?

A $1.0\mathrm{kg}$ block hangs at rest from a rope that is attached to a wall. If the block is in equilibrium and the rope is perfectly vertical, what is the tension in the rope?

In the context of forces and kinematics, which force acts perpendicular to the surface of an object?$?$

A book with a weight of $12–N$ is at rest on a flat table. How many newtons of support force does the table provide?

A $1.83\mathrm{kg}$ book is placed on a flat desk. What is the magnitude of the normal force exerted on the book by the desk? (Assume $g=9.8m/s^2$ and neglect any other forces.)

Suppose three identical pucks (A, B, and C) are each struck by different sticks, causing them to accelerate at different rates. If puck A accelerates at $2 m/s^2$, puck B at $4 m/s^2$, and puck C at $3 m/s^2$, which puck experienced the strongest force, and how do you know?

A car and a dump truck are involved in a head-on collision and come to rest after the collision. Which statement about the forces experienced by the car and the dump truck during the collision is correct?

At the very top of her swing, does the rope supporting the swing exert a force on the girl, and if so, what is the direction of this force?

A uniform beam of length $L$ and mass $m$ is hinged at point A (a fixed support) and rests horizontally. A downward force $F$ is applied at the free end B. What is the vertical reaction force at support A?

If two forces $F_1$ and $F_2$ act at angles ${\theta }_1$ and ${\theta }_2$ with respect to the x-axis, what is the x component $F_x$ of the resultant force?

When a coin is tossed straight upward and reaches the very top of its path (momentarily at rest), how many forces are acting on the coin at that instant (neglecting air resistance)?

Which of the following is a property that all series circuits share in the context of forces and kinematics?

A scallop has a weight of $0.25 n$. If a net force of $0.10 n$ is applied to the scallop, how does this force compare to its weight?