using the statements below, determine if each description refers to speed or velocity. select the correct…

using the statements below, determine if each description refers to speed or velocity. select the correct answer in each row. a train travels northwest at 40 km/hr. a boy rides his bike at 10 m/s. an airplane travels 580 mph toward san diego. a skateboarder is headed west at 10 mph. a school bus travels at 20 km/hr.

using the statements below, determine if each description refers to speed or velocity. select the correct answer in each row. a train travels northwest at 40 km/hr. a boy rides his bike at 10 m/s. an airplane travels 580 mph toward san diego. a skateboarder is headed west at 10 mph. a school bus travels at 20 km/hr.

Answer

Explanation:

Step1: Recall speed - velocity definitions

Speed is a scalar quantity (only magnitude). Velocity is a vector quantity (magnitude and direction).

Step2: Analyze "A train travels northwest at 40 km/hr"

Has magnitude (40 km/hr) and direction (northwest), so it's velocity.

Step3: Analyze "A boy rides his bike at 10 m/s"

Only has magnitude (10 m/s), no direction specified, so it's speed.

Step4: Analyze "An airplane travels 580 mph toward San Diego"

Has magnitude (580 mph) and direction (toward San Diego), so it's velocity.

Step5: Analyze "A skateboarder is headed west at 10 mph"

Has magnitude (10 mph) and direction (west), so it's velocity.

Step6: Analyze "A school bus travels at 20 km/hr"

Only has magnitude (20 km/hr), no direction specified, so it's speed.

Answer:

  1. Velocity
  2. Speed
  3. Velocity
  4. Velocity
  5. Speed