Unit 2: Mechanics

Multiple Choice

Which of the following is NOT a learning outcome for the Mechanics unit?

• Explain the motion of objects in straight line.

• Interpret object’s motion represented by the ticker tape and vector diagrams.

• Describe the structure of an atom.

• Calculate object’s motion using the kinematic equations.

Multiple Choice

Which of the following best describes 1-dimensional motion?

• Motion of objects in a straight line using a single axis system

• Motion of objects in a circular path

• Motion of objects in two perpendicular directions

• Motion of objects in random directions

Multiple Select

Which of the following are valid methods for describing 1-dimensional motion?

• Based on ticker tape diagram

• Based on kinematic equation

• Based on graph

• Based on circular motion

Multiple Choice

In a ticker tape diagram, what does it indicate if the dots are spaced farther apart?

• The object is moving faster

• The object is moving slower

• The object is at rest

• The object is changing direction

Multiple Choice

A ticker tape diagram shows dots that start close together and gradually get farther apart. What does this indicate about the object's motion?

• The object is accelerating

• The object is moving at constant speed

• The object is decelerating

• The object is at rest

Multiple Choice

What does the area under a velocity vs time graph represent?

• Displacement

• Acceleration

• Velocity

• Force

Multiple Choice

Which kinematic equation would you use to find the final velocity of an object given its initial velocity, acceleration, and time?

• vf = vi + at

• s = vit + 1/2 at^2

• vf^2 = vi^2 + 2as

• s = (vi + vf)/2 x t

Multiple Choice

Which kinematic equation is used to calculate the displacement of an object when initial velocity, acceleration, and time are known?

• s = vt + 1/2 at²

• v = u + at

• s = ut + at

• v² = u² + 2as

Multiple Choice

It was once recorded that a car left skid marks that were 300 m in length. Assuming that the car skidded to a stop with an acceleration of -4 m/s², determine the velocity of the car before it began to skid.

• 30.00 m/s

• 48.99 m/s

• 60.00 m/s

• 24.50 m/s

Open Ended

Reflecting on the learning outcomes for this unit, which topic do you feel most confident about, and which topic would you like to explore further?