Four skydivers jump from a helicopter. Diver A: 65 Kg Diver B: 85 Kg Diver C: 100 Kg Diver D: 105 Kg Assuming that we can neglect air resistance, which diver is falling the fastest and why?
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- At a circus, a donkey pulls on a sled carrying a small clown with a force given by . A horse pulls on the same sled, aiding the hapless donkey, with a force of The mass of the sled is 575 kg. Using and from for the answer to each problem, find (a) the net force on the sled when the two animals act together, (b) the acceleration of the sled, and (c) the velocity after 6.50 s.Suppose au airline allows a maximum of 30 kg for each suitcase a passenger brings along. (a) What is the weight in newtons of a 30-kg t1ikasr? (b) What is the weight in pounds?DIRECTIONS: Read the questions carefully. Choose the letter of the correct answer for each item. 1.Two objects of the same size but unequal in weight are dropped from the top of a building. Neglecting air resistance, which will hit the ground first? A. Lighter object B. Heavier object C. Both will hit the ground at the same time D. The lighter object will hit the ground twice faster than the other 2. As the ball travels upwards, at which point will it experience the least velocity? C. As it reached its highest point D. As it travels downward A. As it leaves the hand of the referee B. As it travels halfway 3. Which of the following statements is NOT TRUE about Projectile Motion? A. Horizontal velocity of projectiles is constant B. It is a combination of two independent motions - vertical and horizontal C. The motion of the projectile released vertically downward is accelerated D. Both horizontal and vertical velocities are constant
- Force Diagram: 2. Draw a force diagram for a Sign Conventions hockey player, moving at a constant velocity, across frictionless ice. ΣΕ - Subscript DefinitionsA 1100 kg car speeding at 90 km/h is brought to a stop in a distance of 30m . Compute the average force used to stop the car. a. 1.15 kN b. 11.5 kN c. 29.7 kN d. 10.2 kNQUESTION 6 The figure above is taken from one of the Webassign HW problems which shows a person held up against a wall of a circularly moving ride in which the floor drops away. The radius of the spinning chamber is 3m and the coefficient of static friction between the person and the wall is 0.3. What should be the minimum rotation speed (in RPM) if the person is not to slip? (Round your answer to one decimal place)
- Anna Litical and Noah Formula are experimenting with the effect of mass and net force upon the acceleration of a lab cart. They determine that a net force of F causes a cart with a mass of M to accelerate at 48 cm/s/s. What is the acceleration value of a cart with … a. a mass of M when acted upon by a net force of 2F?b. a mass of 2M when acted upon by a net force of F?c. a mass of 2M when acted upon by a net force of 2F?d. a mass of 4M when acted upon by a net force of 2F?e. a mass of 2M when acted upon by a net force of 4F?Question 13 Not yet answered Marked out of 1.50 P Flag question A 200 kg coal bag is lifted by a crane from a Coal-mine with an acceleration of 5 m/s^2. The force exerted by the crane is a. 960 N O b. 2960 N O . 1960 N O d. 1000 NOn a separate occasion, Michael threatened to jump from the roof of hisoffice building as a demonstration of seasonal depression. If it takes 1.2seconds for his body to plummet to the ground,a. How fast will he be going when he reaches the ground?b. How far will he have fallen in meters?c. In feet?d. If Michael weighs 185 lbs, what would his force of collision with theground be, in Newtons, if his sudden deceleration upon impact takes0.1 seconds? ( 1 lb = 4.45 N, which means on Earth, a weight of 2.2lbs corresponds to a mass of 1 kg)
- Two PHYS 40 students of equal mass sit at the top of a playground slide which makes an angle of 45° with the ground. Student #1 falls off the slide (vertically downward) as student #2 starts sliding downward. Assuming that they both start off with KE = 0, then, when they reach the ground 5. A. KEj = 2KE2 В. КЕј —D VZKE2 C. ΚΕ ΚΕ, D. KE, = VIKE, E. ΚΕ- ΚE$4.. YouTube to MP3 Co. phone cover for mo... AGARWAL-PHY-166 N3 Part A What force is needed to accelerate a sled (total mass = 60 kg ) at 1.8 m/s on horizontal frictionless ice? Express your answer to two significant figures and include the appropriate units. Value Units Submit Request Answer rovide FeedbackZach, 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.)