. Suppose you are standing on a weighing scale in an elevator. What is the reading scale when you are accelerating upward and accelerating downward at a rate of 2.0 m/s^2 . Your mass is 50.0 kg

Name: Newton's Laws of Motion In each case a block is acted on by one or more forces. Draw a vector diagram showing all forces acting on the block, and no other forces. Do it in pencil so you can correct mistakes. The first two are done as examples. 1. Static 2. Static 3. Static T2 mg mg 4. Static 5. Block in free fall 6. Falling at terminal velocity 7. Static 8. Sliding at constant speed 9. Decelerating due to without friction friction 10. Static 12. Static friction prevents sliding 11. Sliding without friction 1

1. Your friend's daughter slides down an icy sliding board. Her motion can be described as motion with: a. A constant speed b. A constant acceleration greater than 10 m/s² C. A constant acceleration less than 10 m/s² d. A constant speed that depends on the steepness of the sliding board 2. A bowler lifts a bowling ball from the floor and places it on a rack. If you know the weight of the ball, what else must you know in order to calculate the work she does on the ball? a. Ball's diameter b. Rack height Lift time C. d. Lifter mass 3. A bug rides on a phonograph record. In which direction does the acceleration of the bug point? Tangent to the circular path Toward the center of the record C. Away from the center of the record d. up a. b.

A worker pulls a crate of mass, m, via a uniform, massless cable that is attached to the crate at an angle, θ, above the horizontal. The resultant tension in the cable is T. What is the normal force acting on the crate? a. mg b. mg + Tsinθ c. mg - Tcosθ d. mg - Tsinθ e. Tsinθ