Unit 3 Motion Exam

is measured along the shortest path connecting them

• distance

• displacement

• unit

• variable

has only magnitude

• Scalar
• Force
• Vector
• Acceleration

is measured by the complete path it takes to get from one point to another.

• Distance
• Area
• Time
• Speed

anything that changes

• Constancy
• unit

• Stability
• variable

50 feet up

• scalar

• vector

• unit

Mrs. Vaughn drove west 17 miles to the store. Then, she drove 2 miles east to the gym. what distance did she drive?

• 19 miles
• 20 miles
• 15 miles
• 25 miles

An object that changes position relative to a reference point is

• a reference point
• in motion

• an object at rest
• a stationary object

On a distance vs. time graph of an object’s motion, distance is usually

• on the horizontal axis (x-axis)
• on the diagonal axis
• not represented on the graph
• on the vertical axis (y-axis)

Average speed can be represented by the mathematical expression

• Average Speed = Total Distance + Total Time
• Average Speed = Distance x Time
• Average Speed = Total Time / Total Distance
• Average Speed = Distance /Time

A baseball is pitched with a speed of 55 m/s. How long does it take the ball to travel 21 m from the pitcher’s mound to home plate?

• 0.25 seconds
• 0.38 seconds
• 0.50 seconds
• 0.60 seconds