Test 1

Identify which of the following statements speed and velocity is correct.

• Velocity only describes an object’s rate of motion

• Only velocity includes the direction an object is traveling

• Speed describes how an object is changing its velocity.

• peed and velocity both describe how an object is speeding up

2.   A wooden block rests on a flat board at an angle q to the horizontal. Which parameter affects the normal force?

Consider an object falling freely from the roof of a building, is object moving at constant velocity or does it accelerate?

• Falling objects accelerate at -9.8 ms^-2

• Falling objects move at constant velocity

• It depends on the mass: heavy objects accelerate, and light objects do not

• Falling objects accelerate at 100 ms^-2

In a physics experiment, a student was asked to determine the total surface area of a right circular cylinder. The radius of

the right cylinder is 2.3 cm and the height is 1.4 cm, what is the total surface area:

• 1.7 × 10⁻³ m²

• 5.3 × 10⁻³ m²

• 3.2 × 10⁻³ m²

• 2.0 × 10⁻³ m³

The graph shows recorded data from a motion sensor recorded of a runner during an Olympic race. During which segment of the race did the runner have the greatest speed?

• Z

• Y

• W

• X

From the list below, which of the following is not an instrument used to measure length

• micrometer screw gauge

• balance

• ruler

• tape measure

In your physics class, you are given the following to be used for unit conversion, which of the following statements is correct

• 100 mg = 1 g

• 
  1 000 000 mg = 1g

• 1 000 000 mg = 1kg

• 1 mg = 10 000 g

What is the dimensional formula of volume?

• M₁L³

• M⁰L³T⁰

• L³T

• M⁰L²T^-1

The vector that is directed from the origin to a point in space is called _______________

• Dot product between the two vectors divided by the magnitude of both vectors

• Cosine inverse of dot product between the two vectors divided by the magnitude of both vectors

• Dot product between the two vectors

• Cross product between the two vectors