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6. Intro to Forces (Dynamics)

Types Of Forces & Free Body Diagrams

6. Intro to Forces (Dynamics)

Types Of Forces & Free Body Diagrams

Multiple Choice
In a circuit diagram (figure $1$ ) containing three light bulbs labeled $A$ , $B$ , and $C$ , which of the following pairs of bulbs are connected in series to each other?
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Multiple Choice
Which of the following is an example of a contact force?
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Multiple Choice
Which type of seismic wave travels the fastest through the Earth?
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Multiple Choice
You push a couch across a carpeted (rough) living room floor. Identify all the forces acting on the couch.
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Multiple Choice
Nick is pulling a $20 kg$ crate across a horizontal floor with a rope angled 30° above the horizontal. The coefficients of kinetic and static friction are 0.2 and 0.3 respectively. If the crate is moving at a constant speed, what is the tension in the rope?
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Multiple Choice
The figure shows all the forces acting on an object. Which arrow could represent the acceleration of that object?
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Multiple Choice
A proton is traveling to the right at 2.0×10^7 m/s. It has a head-on perfectly elastic collision with a carbon atom. The mass of the carbon atom is 12 times the mass of the proton. What are the speeds of the proton and the carbon atom after the collision?
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Multiple Choice
The figure shows all the forces acting on an object. What can you tell about the velocity of the object at this instant?
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