Reaction Time and Distance

A racecar driver has a reaction time of 0.25 seconds. If they are traveling at a velocity of 75 m/s, how far will they travel in the time it takes to react?

• 18.75 meters
• 50 meters
• 30 meters
• 12.5 meters

A cyclist has a reaction time of 0.3 seconds. If they are traveling at a speed of 20 m/s, how far will they travel during their reaction time?

• 6 meters

• 10 meters

• 5 meters

• 3 meters

How far does a car travel in 30 seconds if they have a velocity of 10 m/s?

• 150 meters
• 200 meters
• 250 meters
• 300 meters

A position vs time graph for a driver is shown. Around what time did the driver start to brake?

• 1 seconds

• 2 seconds

• 4 seconds

• 5 seconds

Around what time did the driver come to a complete stop?

• 1 seconds

• 2 seconds

• 4 seconds

• 5 seconds

Tags

NGSS.HS-PS2-1

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What is NOT important in calculating the reaction time of a driver?

• The time of the stimulus

• The time at which they respond (brake/swerve)

• The amount of time they were traveling before the collision

Which of the following does NOT make reaction distance higher?

• Faster speed

• Lower speed

• Texting and driving

• Longer reaction time

What's the object's motion?

• Going up
• Going backwards
• Getting faster
• Getting slower

Tags

NGSS.HS-PS2-1

A reasonable reaction time for an adult human would be

• 2.3 s

• 23 s

• 0.23 s

• .023 s

A pro gamer has a reaction time of 0.15 s. While taking a computer reaction time test, a friend talks loudly to the gamer acting as a distraction. The gamer's new reaction time will likely be...

• slower

• faster

• the same