5-9 Assignment

In the formula to calculate the minimum speed of a vehicle from skid marks, 𝑑 represents __________.

• the distance of the skid marks
• the speed limit of the road
• the weight of the vehicle
• the time taken to stop

The drag factor for asphalt typically ranges from __________.

• 0.3 to 0.5
• 1.0 to 1.2
• 0.4 to 0.6
• 0.5 to 0.9

If a vehicle leaves skid marks on ice with a drag factor of 0.20 and the skid distance is 150 feet, the speed of the vehicle was approximately __________ mph.

• 30 mph
• 25 mph
• 15 mph
• 20 mph

True or False: A yaw mark shows the vehicle's path while sliding sideways.

• True

• False

True or False: ABS skid marks typically appear as solid, continuous lines.

• True

• False

True or False: A car skidding on a dry, rough concrete road will have a higher drag factor than one skidding on wet ice.

• True

• False

If the drag factor for asphalt is 0.75 and the skid distance is 100 feet, what is the closest approximate speed of the vehicle?

• 50 mph

• 60 mph

• 70 mph

• 80 mph

What type of skid mark would you expect from a car with an Anti-lock Braking System (ABS)?

• Continuous and solid

• Dash-like and broken

• Curved and serpentine

• Short and irregular

A vehicle left skid marks on dry concrete (drag factor = 1.0), and the skid distance was 120 feet. What was the minimum speed of the vehicle?

• 50 mph

• 60 mph

• 72 mph

• 80 mph

What is the term used to describe the curved marks left by a vehicle skidding sideways while still moving forward?

• Skid marks

• Yaw marks

• Swerve marks

• Brake marks