PT Fall Semester Exam

A car driving at 50 miles per hour drives for 2 hours. What distance did it cover?

• 50 miles

• 25 miles

• 100 miles

• 75 miles

Answer explanation

v = 50 mi/h, t = 2 hr, d = ? Use v = d/t to solve

This graph demonstrates an object that is -

• Increasing speed
• At a constant speed
• Decreasing speed
• Stationary

Tags

NGSS.MS-PS3-1

This graph demonstrates an object that is -

• Increasing speed
• At a constant speed
• Decreasing speed
• Stationary

Tags

NGSS.MS-PS3-1

This graph demonstrates an object that is -

• Increasing speed away from the start

• Moving away from the start at a constant speed

• Decreasing speed toward the start

• Moving toward the start at a constant speed

Answer explanation

The slope of the line is constant (no curves) so the velocity is also constant

Which line represents an object moving at a faster speed?

• A
• B

Tags

CCSS.8.EE.B.5

How long did one of the runner's rest?

• 8 seconds
• 13 seconds
• 5 seconds
• 50 seconds

Tags

CCSS.HSF.IF.B.4

Which would fall with greater acceleration in a vacuum—a leaf or a stone?

• the leaf

• the stone

• They would accelerate at the same rate.

• It is difficult to determine without more information.

Answer explanation

without air resistance (in a vacuum) all objects accelerate at $9.8\frac{m}{s^2}$

What is the average speed of a car that travels 35 meters in 12 seconds?

• None

• 3.1 m/s

• 35 m/s

• 2.9m/s

Answer explanation

Average speed is the same thing as velocity. Use v = d/t

Which of the following units could you use when measuring a speed?

• meters

• m/s

• seconds

• m/s²

Tags

NGSS.HS-PS4-1

Which of the following units could you use when measuring an acceleration?

• meters

• m/s

• seconds

• m/s²