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Use the information below to identify all the action/reaction pairs of forces between the girl and the sofa.
ASSIGNMENT A girl stands on a sofa. Identify all the action/reaction pairs of forces between the girl and the sofa.
Using the information provided, calculate what the object’s mass is.
ASSIGNMENT I Figure P4.21 shows an object’s acceleration-versus-force graph. What is the object’s mass? FIGURE P4.21 F (N)
What is its maximum acceleration after picking up four passengers and their luggage, adding an additional 400 kg of mass?
Assignment II A compact car has a maximum acceleration of 4.0 m/s2 when it carries only the driver and has a total mass of 1200 kg. What is its maximum acceleration after picking up four passengers and their luggage, adding an additional 400 kg of mass?
Explain. Figure P4.13 shows an acceleration-versus-force graph for three objects pulled by identical rubber bands. The mass of object 2 is 0.20 kg. What are the masses of objects 1 and 3?
Questions are about Forces and Newton’s Laws of Motion 1111 Figure P4.13 shows an acceleration-versus-force graph for three objects pulled by identical rubber bands. The mass of object 2 is 0.20 kg. What are the masses of objects 1 and 3? Explain your reasoning. a (ml s2) 5 4 3 2 1 0 FIGURE P4.13 […]
Do you think twentieth-century people were more likely to be “trapped” than previous generations of people were? What effect does it have on people’s lives when they describe themselves as trapped?
Metamorphosis What did you like about the text? What did you dislike about the text? What do you learn about Gregor and the other characters? What passages do you find especially striking as examples of the author’s style? What passages seem suggestive of theme, tone, or symbol? How does Kafka create suspense in the novella? […]
How long was the ball in flight? Ignoring air resistance, how much farther would it travel on the moon than on earth?
ASSIGNMENT III On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hit the ball with a speed of 25 m/s at an angle 30° above the […]
How far from a point on the floor directly below the edge of the bench will the ball land?
Assignment II A ball with a horizontal speed of 1.25 m/s rolls off a bench 1.00 m above the floor. How long will it take the ball to hit the floor? How far from a point on the floor directly below the edge of the bench will the ball land?
What was the bullet’s flight time? What was the bullet’s speed as it left the barrel?
ASSIGNMENT III A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.0 cm below the aim point. What was the bullet’s flight time? What was the bullet’s speed as it left the barrel?
What was the angle of the hill? What was the vertical component of Jill’s velocity?
Assignment II Jack and Jill ran up the hill at 3.0 m/s. The horizontal component of Jill’s velocity vector was 2.5 m/s. What was the angle of the hill? What was the vertical component of Jill’s velocity?