AP Physics 1mediummcq1 pt
A crane lifts a 200 kg load 10 m in 5.0 s (g = 10 m/s²). Its power output is
A.4000 W
B.2000 W
C.20000 W
D.800 W
Explanation
Core Concept
P = mgh/t = (200)(10)(10)/5.0 = 4000 W.
Correct Answer
A4000 W
More Unit 4: Energy practice questions
- mediumA 0.30 kg block hits a spring (k = 300 N/m) at 4.0 m/s. The spring's maximum compression is
- easyA motor lifts a 100 kg elevator at a constant 2.0 m/s (g = 10 m/s²). The motor's power output is
- hardA skier of mass 70 kg starts from rest at the top of a 30 m slope with 5.0 m of vertical drop and reaches the bottom at 8.0 m/s (g = 10 m/s²…
- easyA force of 12 N acts on a 3.0 kg block initially at rest on frictionless ice for 2.0 m. The block's final speed is
- easyA 2.0 kg ball is thrown horizontally from a 5.0 m cliff at 4.0 m/s (g = 10 m/s²). Its kinetic energy just before impact is
Practice more AP Physics 1 questions with full explanations
Practice Unit 4: Energy Questions →