QUESTIONS1. 500 kg roller starts from a point A as shown in the diagram below. If throughout its travelthe average retarding force due to air friction on the wheel is 200 N. What is its speed atpoints B and C given that |AB| = 100 m and |BC| = 50 m. How far will it travel at theelevation of C before coming to rest?Ato20 m5 m2. Under a constant force, a 10 kg ball increases its speed from 2.0 ms- to 7 ms aftercovering 50 m. Calculate the force on the ball.3. A stone is thrown vertically upwards fiom the top of a building 50 m tall withvelocity of 20.0 ms. If the stone just misses the edge of the roof on its return, determine(a) The time taken by the stone to get to its maximum height.(b) The maximum height reached by the stone(c) The time at which the stone retum to the point where it was thrown(d) The velocity of the stone at this instance(e) The velocity and position of the stone at t= 5 s.initial4.(a) What is the difference between inertia and momentum?(b) A bullet of mass 40.0 g is fired from a gun with a nozzle velocity of 25.0 ms'. Calculatethe recoil velocity of the gun whose mass is 5.0 kg.5. When an airplane lands on an aireraft canier, it can be stopped by a huge steel “arestingwire" stretched across the deck. A plane of mass 20 ton lands on the canier at 50 msand the wire has a stiffness k = 3.3 x 108. Find(a) The kinetic energy of the plane on landing(b) The amount of the resting wire stretches (assuming the wire obeys Hooke's law).6. An object moves along the x-axis according to the equation x(t) = (3.00t – 2.00t +1.00) m. Determine(a) The average speed between t= 2.00 s and t= 3.00 s,(b) The instantaneous speed at t= 2.00 s and at t= 3.00 s,(c) The average acceleration between t= 2.00 s and at t= 3.00 s,(d) The instantaneous acceleration att=2.00 s and at t= 3.00 s.

Ans.2 Given Data The mass of the ball, m=10Kg Initial speed, u = 2 m/s Final speed, v = 7 m/s…

Answered: Under a constant force, a 10 kg ball…

Under a constant force, a 10 kg ball increases its speed from 2.0 ms to 7 ms after covering 50 m. Calculate the force on the ball.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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