Physical Science Test 2

What is the formula for speed?

• 
  

  $v=\frac{\Delta x}{t}$

• $s=ma$

• $v=\frac{\Delta v}{t}$

• $v=\frac{d}{t}$

What quantity of motion is defined as the product of mass and velocity?

• work

• inertia

• power

• momentum

Who discovered the laws of gravity and motion?

• Aristotle

• Galileo

• Newton

• Bacon

What is any variation in the rate of an object's velocity over time?

• speed

• acceleration

• momentum

• weight

What is the SI unit of work

• joule

• watt

• newton

• ampere

What is the SI unit of power

• ampere

• joule

• watt

• newton

What is the SI unit of force?

• ampere

• joule

• watt

• newton

What is the velocity at which air resistance prevents a free-falling object from accelerating?

• Centripetal force

• Centrifugal force

• Terminal velocity

• Free-fall velocity

Which principle states that for every action there is an equal and opposite reaction?

• First law of motion

• Second law of motion

• Third law of motion

Which principle is also known as the law of inertia?

• First law of motion

• Second law of motion

• Third law of motion