uming no frictional forces, the acceleration of the trolley .00 ms-² B. 2.45 ms ² C. 1.95 ms ²

Two children hold opposite ends of a lightweight, 1.8-m-long horizontal pole with a water bucket hanging from it. The older child supports twice as much weight as the younger child. How far is the bucket from the older child?A. 0.3 m             B. 0.6 mC. 0.9 m             D. 1.2 m

q8 and q9

You are standing still on a bathroom scale. The scale shows your weight 140 lbs. How much is the support force?   A. ZERO   B. 140 x 9.8 m/s^2   C. 140N   D. 140 lbs Then choose all that apply to centripetal force.   A. Gravitational and electrical forces can produce centripetal forces.   B. Centripetal force depends on tangential spreed and radius of curvature .   C. twice the radius needs half the centripetal force.   D. Measured in the units of N or kg m/s^2   E. Any type of force directed towards a fixed center.   F. Twice the speed needs four times the centripetal force.   G. Centripetal force depends on the mass, tangential speed and radius of the curvature.

Suppose a 4.25 slug gymnast is climbing a rope.  a. What is the tension, in the rope, in pounds if he climbs at a constant speed b. What is the tension, in the rope, in pounds, if he accelerates upwards at a rate of 5.9ft/s2

Zach, whose mass is 70 kg, is in an elevator going up at a constant speed of 2.0 m/s. Match the answers with questions. Use g = 10.0 m/s². vious Question What is the net force on Zach? A. -70 kg B. -700 N C. -140 N D. 700 N E. ON F. 140 N G. 70 kg What is the weight force on Zach? (This is Zach's true weight.) What is the normal force on Zach? (This is Zach's apparent weight.)

HW5 Q6

7:14 ...leet02-xythos.content.blackboardcdn.com K Basics of Forces and Motion Use a virtual simulation to explore the basics of forces and motion. To access this activity, please visit: https://phet.colorado.edu/. Search for Forces and Motion: Basics (HTML5). Click Play. G Anytime you need to reset the simulation to default values, click the Reset button: Click the Net Force option. Check the boxes next to Sum of Forces, Values, and Speed: N 1. Explore the simulation by placing red and blue figures on the rope to simulate a tug of war. What is the exact measurement of forces that each size figure can pull the rope? a. Small: b. Medium: c. Large N N LTE Sum of Forces Values ✔Speed 2. Place two small blue figures on the left against 1 medium red figure on the right. Click Go! a. Which statement below best describes the resulting motion? (circle one) i. The speed is zero. ii. The speed is non-zero and constant. iii. The speed increases to the right. iv. The speed increases to the left. b.…

q6 help please

You go through a loop in a roller coaster at constant speed. Your acceleration is: A. zero B. straight down C. toward the center D. straight up