37. If a 5 newton brick is dropped 2 meters to the floor, what would be the brick's kinetic energy just before impact? A. zero B. 5 newtons C. 10 newton- meters D. 25 joules.
37. If a 5 newton brick is dropped 2 meters to the floor, what would be the brick's kinetic energy just before impact? A. zero B. 5 newtons C. 10 newton- meters D. 25 joules.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question
37,38,41
Transcribed Image Text:36. If a pile driver lifts a 500 lb weight 12 feet in 4 seconds, the power produced
is
A. zero
B. 2.73 horsepower
C1500 ft-lb/sec
D. 24,000 ft-lb-sec
E. both B and C
37. If a 5 newton brick is dropped 2 meters to the floor, what would be the brick's
kinetic energy just before impact?
A. zero
B. 5 newtons
C. 10 newton- meters
D. 25 joules
38. If a 5 newton brick was dropped 2 meters
kinetic energy be immediately after impact?
A. zero
B. 5 newtons fo
C. 10 newton- meters
D. 25 joules
39. Falling water can turn turbines and produce
businesses.
A. heat
B. light
Celectricity
D. none of these
A
40. A tug boat exerts 1000 pounds of force on a barge for 25 seconds. If the
barge does NOT move, the work done is
A. 0
B. 400 ft-lb
C. 1000 lb
D. 1025 lb-sec
the floor, what would the brick's
for homes and
41. If the above barge moves 30 feet in 25 seconds, the work done is
A. 0
B. 400 ft-lb
C. 1000 lb
D. 30000 ft-lb
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