Physics Unit 1 TEST

What is the equation for velocity?

• v = d/t

• v = t/d

• v = (s)(d)

• v = (d)(s)

Maison was driving a car going 50 mph and then slowed down to 20 mph in 5 seconds. What is Maison's acceleration?

• postive acceleration

• negative acceleration

Kevin Arbor walks continuously in a circle. Is he accelerating?

• Yes, he is accelerating.
• No, he is not accelerating.
• He is moving at a constant speed.
• He is decelerating while walking.

Speed is used to describe the rate at which an object is traveling. Speed does NOT include a direction. Is speed a scalar quantity or vector?

• Vector quantity
• Scalar quantity
• Speed with direction
• Acceleration

The slope of a line on a velocity vs time graph is the what of the object?

• acceleration
• force
• displacement
• velocity

Rate and direction of an object’s motion

• Velocity
• Momentum
• Acceleration
• Speed

Kross ran 5 meters in 5 seconds. What is Kross' speed?

• 5 meters per second

• 0.5 meters per second
• 1 meter per second
• 10 meters per second

How are speed and velocity different?

• Speed is scalar; velocity is vector.
• Speed can be negative while velocity cannot.
• Velocity measures distance over time.
• Speed is a type of velocity.

Which of the following is an appropriate unit for speed? (HINT: distance/time)

• kilometers per hour (km/h)
• grams per meter (g/m)
• liters per second (L/s)
• meters per second (m/s)

A flat line on a velocity time graph

• Constant velocity
• Variable acceleration
• Rate at which velocity changes

• Increasing speed