Entry Exam Category: Graduate & Professional Program Admission Exams
Course: Praxis
Exam: Praxis Elementary Science 5005 Practice Test
Practice Question
Which of the following best explains why an ice skater is able to coast on ice for a long distance without pushing off in a straight line across the ice?
Answer Choices
- A: The force of friction on the blades of the skates is greater than the force of friction on the ice.
- B: The force of friction on the blades of the skates is less than the force of friction on the ice.
- C: The ice exerts a constant forward force on the skater.
- D: The buoyant force on the blades of the skates is greater than the weight of the skater.
Correct Answer: B
Rationale: Low friction blades/ice allows coasting. A: Opposite. C: No forward force. D: Buoyancy not key. Minimal resistance.