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soccer ball has a mass of 0.40 kg.  Initially it is moving to the left at 20m/s but then it is kicked.  After the kick it is moving at 45° upward and to the right with speed 30m/s. Find the impulse of net force and the average net force, assuming a collision time t=0.01s

soccer ball has a mass of 0.40 kg.  Initially it is moving to the left at 20m/s but then it is kicked.  After the kick it is moving at 45° upward and to the right with speed 30m/s. Find the impulse of net force and the average net force, assuming a collision time t=0.01s

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A soccer ball has a mass of 0.40 kg.  Initially it is moving to the left at 20m/s but then it is kicked.  After the kick it is moving at 45° upward and to the right with speed 30m/s. Find the impulse of net force and the average net force, assuming a collision time t=0.01s

ii. State with proof whether it is an elastic or inelastic collision. (1mk) Ke before = my Kt After = 1½/22 (mirm2) v.² = 4/₂2 (6+3) 2² = 6x2¹ iii. If the impulsive force applies onto each other is 400N, what is the collision time? (1mk) Question 5 A soccer ball has a mass of 0.40 kg. Initially it is moving to the left at 20m/s but then it is kicked. Afte it is moving at 45° upward and to the right with speed 30m/s. Find the impulse of the net force and th net force, assuming a collision time At = 0.010s. (Hint: consider the forces in x and y direction) (4mks (4) Before-and-after diagram 36 sin 4 = 21.2 N x=20 =125 14/1 Friet D₂ = 30 m/s 45 AFTER m=0.40 kg v₁ = 20 m/s ma = m(v-ut 6:40x/30-(- BEFORE 0.010 0.40 x 50 0.01 2000N (b) Average force on the ball (p=fnet At AF = 2000x0:0 ZON mouse of not force (Far) مے adjok tar! (80 Question 6 A marksman holds a rifle of mass MR = 3.00kg loosely, so it can recoil freely. He fires a bullet of m 5.00g horizontally with a velocity relative to the ground of 3 00m/s. What is the recoil velocity rifle? What are the final momentum and kinetic energy of the bullet and rifle? (4mks) Before
Transcribed Image Text:ii. State with proof whether it is an elastic or inelastic collision. (1mk) Ke before = my Kt After = 1½/22 (mirm2) v.² = 4/₂2 (6+3) 2² = 6x2¹ iii. If the impulsive force applies onto each other is 400N, what is the collision time? (1mk) Question 5 A soccer ball has a mass of 0.40 kg. Initially it is moving to the left at 20m/s but then it is kicked. Afte it is moving at 45° upward and to the right with speed 30m/s. Find the impulse of the net force and th net force, assuming a collision time At = 0.010s. (Hint: consider the forces in x and y direction) (4mks (4) Before-and-after diagram 36 sin 4 = 21.2 N x=20 =125 14/1 Friet D₂ = 30 m/s 45 AFTER m=0.40 kg v₁ = 20 m/s ma = m(v-ut 6:40x/30-(- BEFORE 0.010 0.40 x 50 0.01 2000N (b) Average force on the ball (p=fnet At AF = 2000x0:0 ZON mouse of not force (Far) مے adjok tar! (80 Question 6 A marksman holds a rifle of mass MR = 3.00kg loosely, so it can recoil freely. He fires a bullet of m 5.00g horizontally with a velocity relative to the ground of 3 00m/s. What is the recoil velocity rifle? What are the final momentum and kinetic energy of the bullet and rifle? (4mks) Before
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