14 A 4.0 x 10-watt motor applies an 8.0 x 10- newton force to move a boat at constant speed. How far does the boat move in 16 seconds? (2) 5.0 m (1) 3.2 m (3) 32 m (4) 80. m 15 A boat weighing 9.0 × 10 newtons requires a horizontal force of 6.0 x 10' newtons to move it across the water at 1.5 X 10' meters per second. The boat's engine must provide energy at the rate of (1) 2.5 x 10 J (2) 4.0 x 10' W (3) 7.5 x 10' J (4) 9.0 x 10' W
14 A 4.0 x 10-watt motor applies an 8.0 x 10- newton force to move a boat at constant speed. How far does the boat move in 16 seconds? (2) 5.0 m (1) 3.2 m (3) 32 m (4) 80. m 15 A boat weighing 9.0 × 10 newtons requires a horizontal force of 6.0 x 10' newtons to move it across the water at 1.5 X 10' meters per second. The boat's engine must provide energy at the rate of (1) 2.5 x 10 J (2) 4.0 x 10' W (3) 7.5 x 10' J (4) 9.0 x 10' W
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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help with questions 14 and 15
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13 A weightlifter lifts a 200-kilogram mass a vertical
distance of 0.5 meter in 0.1 second. What is the
lifter's power output?
(1) 1 × 10 W
(2) 4 x 10 W
14 A 4.0 X 10-watt motor applies an 8.0 x 10²-
newton force to move a boat at constant speed.
How far does the boat move in 16 seconds?
(3) 1 x 10 W
(4) 4 × 10' W
(1) 3.2 m
(2) 5.0 m
(3) 32 m
(4) 80. m
15 A boat weighing 9.0 × 10 newtons requires a
horizontal force of 6.0 x 10' newtons to move it
across the water at 1.5 X 10' meters per second.
The boat's engine must provide energy at the
rate of
(1) 2.5 x 10 J
(2) 4.0 x 10' W
(3) 7.5 × 10' J
(4) 9.0 × 10' W
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