AP Physics 1hardmcq1 pt
A 1.0 kg rock and a 10 kg boulder are dropped together on the Moon, where air resistance is absent. The rock's acceleration compared with the boulder's is
A.the same
B.ten times greater
C.one tenth as great
D.zero
Explanation
Core Concept
a = F/m = mg/m = g — mass cancels, so both fall with the same acceleration.
Correct Answer
Athe same
More Unit 2: Dynamics practice questions
- easyA 5.0 kg block on a frictionless surface is pulled by two ropes in the same direction with forces 12 N and 8.0 N. Its acceleration is
- hardTwo crates (A = 3.0 kg in front, B = 2.0 kg behind) are pushed in a line by 20 N on B across frictionless ice. The force of A on B is
- easyA child sits in a wagon pulled by a rope. The wagon's inertia is measured by
- hardA 8.0 kg block slides down a 30° incline where μ_k = 0.20 (sin 30° = 0.50, cos 30° = 0.87, g = 10 m/s²). Its acceleration is
- hardA ball of mass m hangs from a string in a car that accelerates forward at a (g = 10 m/s²). The string makes an angle with the vertical such …
Practice more AP Physics 1 questions with full explanations
Practice Unit 2: Dynamics Questions →