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Newton's first law

AP.PHYS: SYS‑1.C (EU), SYS‑1.C.1 (EK), SYS‑1.C.1.1 (LO), SYS‑1.C.3 (EK), SYS‑1.C.3.1 (LO)


Two students want to determine the inertial mass of a block. Student A hangs the block from a spring scale. Student B places the block on a near-frictionless surface and measures the block’s acceleration while applying a known horizontal force.
Which student’s method is best for measuring inertial mass, and why?
Choose 1 answer: