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Ostdiek and Bord - Inquiry into Physics 7/e (Homework)

James Finch

Physics - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 0 / 13

Due : Monday, January 28, 2030 00:00 EST

Last Saved : n/a Saving...  ()

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    Here are some textbook questions from Inquiry into Physics 7/e by Vern J. Ostdiek and Donald J. Bord published by Brooks/Cole Publishing. Click here for a list of all of the questions coded in WebAssign. This demo assignment allows many submissions and allows you to try another version of the same question for practice wherever the problem has randomized values.

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1. 0/1 points  |  Previous Answers OBInPhys7 2.P.006. My Notes
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A motorcycle and rider have a total mass equal to 300 kg. The rider applies the brakes, causing the motorcycle to accelerate at a rate of -5 m/s2. What is the magnitude of the net force on the motorcycle?
Incorrect: Your answer is incorrect. N
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2. –/3 points OBInPhys7 2.P.011. My Notes
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1 2 3
–/1 –/1 –/1
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–/3
 
A person stands on a scale inside an elevator at rest. The scale reads 800 N.
(a) What is the person's mass?
kg

(b) The elevator accelerates upward momentarily at the rate of 2 m/s2. What does the scale read then?
N

(c) The elevator then moves with a steady speed of 5 m/s. What does the scale read?
N
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3. –/2 points OBInPhys7 2.P.013. My Notes
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–/2
 
The maximum acceleration of a fist during a particular karate blow was measured to be about 3,500 m/s2.
(a)If the mass of the fist was approximately 0.7 kg, what was the maximum force?
N

(b) What was the maximum force on the concrete block?
N

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4. –/2 points OBInPhys7 2.P.021. My Notes
Question Part
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–/2
 
A hang glider and its pilot have a total mass equal to 120 kg. While executing a 360° turn, the glider moves in a circle with an 8-m radius. The glider's speed is 10 m/s.
(a) What is the net force on the hang glider?
F = N

(b) What is the acceleration?
a = m/s2
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5. –/1 points OBInPhys7 2.Q.001. My Notes
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What is force? Identify several of the forces that are acting on or around you.

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6. –/1 points OBInPhys7 2.Q.003. My Notes
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–/1
 
A person places a book on the roof of a car and drives off without remembering to remove it. As the book and the car move down a street at a steady speed, there are two horizontal forces acting on the book. What are they? (Select all that apply.)

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7. –/2 points OBInPhys7 2.Q.021. My Notes
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As any car travels with constant velocity on a straight, flat section of highway, the road still exerts both a vertical (upward or downward) force and a horizontal (forward or backward) force on the car. Which direction is the vertical force?
    

Which direction is the horizontal force?
    
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8. –/1 points OBInPhys7 2.Q.032. My Notes
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–/1
 
What mathematical "tool" did Newton develop that has been essential to advanced physics since then?
    
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