Chapter-4 Forces and Newton's Laws of MotionQuestion 1. The speed of a bobsled is increasing, because it has an acceleration of 2.75m/s². At a given instant in time, the forces resisting the motion, including kinetic friction and airresistance, total 505 N. The mass of the bobsled and its riders is 346 kg. (a) What is the magnitudesof the force propelling the bobsled forward? (b) What is the magnitude of the net force that actson the bobsled? Ans: 1456.5 N; 951.5 NQuestion 2 Only two forces act on an object (mass=2.97 kg), as in the drawing. Find (a) thein the raris) of the acceleration of the object. Ans: 31.21

The acceleration of bobsled (a) = 2.75 m/s2The total resisting force (f) = 505 N Mass of bobsled (m)…

Answered: Chapter-4 Forces and Newton's Laws of…

Similar questions

A constant net force causes an acceleration of 20 m/s². What will be the acceleration of the object if the force is halved? Enter to 2 significant figures m/s² a = A constant net force causes an acceleration of 20 m/s². What will be the acceleration of the object if the mass is doubled? Enter to 2 significant figures m/s² a =
Three forces acting on an object are given by F1 = (−2.2î + 5.50ĵ) N, F2 = (4.85î − 2.1ĵ) N and F3 = (−47.5î) N. The object experiences an acceleration of magnitude 3.65 m/s2. i. What is the direction of the acceleration? (counterclockwise from the +x-axis) ii. What is the mass of the object? iii. If the object is initially at rest, what is its speed after 20.0 s? iv. What are the velocity components of the object after 20.0 s? (Let the velocity be denoted by v.
You work at a garden store for the summer. You lift a bag of fertilizer with a force of 114 N, and it moves upward with an acceleration of 0.810 m/s². (a) What is the mass (in kg) of the fertilizer bag? kg (b) How much (in N) does the fertilizer bag weigh? N
At a time when mining asteroids has become feasible, astronauts have connected a line between their 3360-kg space tug and a 5770- kg asteroid. They pull on the asteroid with a force of 380 N. Initially the tug and the asteroid are at rest, 356 m apart. How much time does it take for the ship and the asteroid to meet? Number Units aT ap
In the figure, two blocks are connected over a pulley. The mass of block A is 5.80 kg and the coefficient of kinetic friction between A and the incline is 0.360. Angle e of the incline is 31.0°. Block A slides down the incline at constant speed. What is the mass of block B? Frictionless, massless pulley B. Number i Units
A skater of mass m standing on ice throws a stone of mass M with speed v in a horizontal direction. Find the distance over which the skater will move in the opposite direction if the coefficient of kinetic friction between the skater and the ice is ?k . (Use any variable or symbol stated above along with the following as necessary: g.)Δx =
+ Blocks of mass m₁ and m₂ are connected by a massless string that passes over the pulley in the figure (Figure 1). The pulley turns on frictionless bearings, and mass m₁ slides on a horizontal, frictionless surface. Mass m₂ is released while the blocks are at rest Figure m₁ m₂ < 1 of 1 Assume the pulley is massless. Find the acceleration of m₁. Express your answer in terms of some or all of the variables m₁, m2, and constant g. 19] ΑΣΦ) a₁ = 0.684m₁ Submit Previous Answers Request Answer Part B X Incorrect; Try Again; One attempt remaining d 17 ΑΣΦ ? Find the tension in the string. Express your answer in terms of some or all of the variables m₁, m2, and constant g. P Pearson ?
four forces act on an object, given by A=32.3 N, east B=50.3 N north, c = 82,7 n west, and d=72.7 n south ( assume east and north are directed along the + x-axis and y+-axis respectively.) a. what is the magnitude of the net force (in N) on the object? b. what is the direction of the force? ( enter your answer in degree counterclockwise from the +x-axis.)