- 1. You're at a playground and you decide to climb up the slide. As you climb, you start to feel your muscles working and your breath becoming shallower. When you finally reach the top you stand still for a moment to catch your breath , enjoying the view. But then, you feel a thrill of excitement as you realize that the fun part is about to begin. You sit down on the slide and push off. As you start sliding down, you feel the wind in your hair and the rush of speed. How does potential energy change as you climb up the slide?
- Chapter 6 Newton's Second Law of Motion-Force and Accessor 11. Circle the letter of each statement related to Newton's second law that is true. a. Acceleration is directly proportional to the net force. b. The direction of acceleration is the same as the net force C. Acceleration is inversely proportional to mass. d. Net force and mass are always equal. 12. When using the equation for Newton's second law, if force is measured in newtons, then the unit for acceleration is __ and the unit for mass is __ 13. Is the following sentence true or false?The acceleration of an object is equal to the net force acting on it divided by the object's mass __ 14. A 100-N force is used to accelerate a large push cart across the floor.Circle the letter of the force required to accelerate the push cart twice as fast. a. 50 N b. 100 N C. 150 N d. 200 N 15 An object accelerates when a net force is applied to it. Circle the letter describing the conditions that would double the object's acceleration. a. doubling the mass b. halving the force C. doubling the mass and halving the force d. halving the mass 16. During a lab experiment, a net force is applied to an object and the object accelerates. The mass of the object is then doubled, and the net force applied to it also doubles. Describe the object's acceleration. __ 17. Circle the letter of the equation that motion. a. a=(F)/(m) b. F=ma^2 C. F=(a)/(m) d. F=(1)/(2)(am)^2 18. Describe what causes friction between two solid surfaces. __ 6.4 Friction (page 90-91 19. Is the following sentence true or types of materials in contact with each other. __ 20. Is the following sentence true or false? Friction depends on how much the materials in contact are pushed together. __ 42 Conceptual Physics Reading and Study Workbook - Chapter 6
- Use with textbook poges 221-223 Use the text below to answer the questions that follow it. Your teacher has set up an electrical circuit in the classroom. A cloth has been all the components except for the loads.four light bulbs, each of a different colaid over result, it is impossible to see how the circuit has been set up. Your teacher challenges you to draw a circuit diagram of the circuit.To help you determine how the circuit has been designed, your teacher performs the following tests. Test A Your teacher turns off the red light bulb.The blue light bulb turns off as well.The green and yellow light bulbs remain on. Test B teacher unscrews the green light bulb that remained on in test A. The yellow bulb immediately turns off.The other light bulbs remain on. 1. Draw a possible circuit diagram for the circuit. Label the light bulbs by colour.
- 2. An object is spun in a circle of radius 0.4 m with a frequency of 8.0 Hz. What is its velocity? Formula V= r= fequiv
- 14. A high-speed windmill can utilize a maximum wind power of 6.53times 10^3 W. If the windmill turned a generator that was only 27.0% efficient, the actual electrical power output is a.bctimes 10^dW The values of a b, c and d are __ __ __ and __ (Record your answer in the numerical-response section below.) Your answer: square square square square
