AP Physics 1easymcq1 pt
A 70 kg person stands on a scale in an elevator moving up at constant speed (g = 10 m/s²). The scale reads
A.700 N
B.more than 700 N
C.less than 700 N
D.zero
Explanation
Core Concept
Constant velocity means a = 0, so N = mg = 700 N.
Correct Answer
A700 N
More Unit 2: Dynamics practice questions
- hardA 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 th…
- 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
Practice more AP Physics 1 questions with full explanations
Practice Unit 2: Dynamics Questions →