Situation 5. The two disks A and B have a mass of 3kg and 5kg, respectively. If they collide with initial velocities shown, determine their velocities just after impact. The coefficient of restitution is e=0.65. 10. Determine the velocity of A after collision. 11. Determine the velocity of B after collision.

1. The launcher is set to launch a projectile horizontally. Once launched, the projectile will immediately go into the pendulum (the “catcher” in the diagram), causing the pendulum to swing. Considering momentum, sum all the momenta of the situation after the ball is launched but before it goes into the pendulum. Do not consider the recoil of the launcher. 2. When the ball gets caught by the pendulum, what kind of collision is this (elastic or inelastic)? What is the momentum after the collision? Using conservation of momentum, derive an equation for the velocity of the ball/pendulum combo immediately after the ball is caught (and before the pendulum starts to swing upward). The equation can depend on the mass of the ball, the mass of the pendulum, and the initial velocity of the ball. 3. The pendulum will start to swing upwards. At the beginning of its swing, what kind ofenergy does the pendulum have? It will swing up to a certain angle where it will temporarily stop. What kind of…

Car A has a mass of 2000 kg and approaches an intersection with a velocity of 38 m/s directed to the east. Car B has a mass of 3500 kg and approaches the intersection with a velocity of 53 m/s directed 63° north of east. The two cars collide and stick together after the collision. Will the center-of-mass velocity change as a result of the collision? Explain why or why not. Calculate the center-of-mass velocity before and after the collision.

In the middle of a race, three runners have the following speeds and masses. A. 56 kg, 4.5 m/s B. 66 kg, 4.0 m/s C. 87 kg, 2.5 m/s Order the runners from largest linear momentum to smallest linear momentum. (Use only ">" or "=" symbols. Do not include any parentheses around the letters or symbols.)

1. The launcher is set to launch a projectile horizontally. Once launched, the projectile will immediately go into the pendulum (the “catcher” in the diagram), causing the pendulum to swing. Considering momentum, sum all the momenta of the situation after the ball is launched but before it goes into the pendulum. Do not consider the recoil of the launcher. 2. When the ball gets caught by the pendulum, what kind of collision is this (elastic or inelastic)? What is the momentum after the collision? Using conservation of momentum, derive an equation for the velocity of the ball/pendulum combo immediately after the ball is caught (and before the pendulum starts to swing upward). The equation can depend on the mass of the ball, the mass of the pendulum, and the initial velocity of the ball. 3. The pendulum will start to swing upwards. At the beginning of its swing, what kind ofenergy does the pendulum have? It will swing up to a certain angle where it will temporarily stop. What kind of…

4. An object, initially travelling at 45 m/s [N], explodes into three pieces. Afterward, the first piece has a mass of 6kg, and travels at 68 m/s [N25E]. The second piece has a mass of 2.5kg, and obtains a new velocity of 26 m/s [N75W]. a) If the third piece has a mass of 4kg, determine its vector velocity after the explosion. b) Determine the change in energy.

if a stationary 3.2 obect explodes so that: a. one part that is 1.5 kg goes left with 2.6 m/s , what is the mass and velocity of the other part? b. One part that is 1.0 kg goes North at 3.4 m/s and one part that is 1.2 kg goes West at 3.0 m/s, what is the mass and velocity of the third part?

FI R %24 Part A A ball of mass m moving with velocity v strikes a vertical wall as shown in (Eigure 1). The angle between the ball's initial velocity vector and the wall is 6 as shown on the diagram, which depicts the situation as seen from above. The duration of the collision between the ball and the wall is At, and this collision is completely elastic. Friction is negligible, so the ball does not start spinning. In this idealized collision, the force exerted on the ball by the wall is parallel to the x axis. What is the final angle Or that the ball's velocity vector makes with the negative y axis? Express your answer in terms of quantities given in the problem introduction. > View Available Hint(s) Of = 0; Submit Previous Answers v Correct Part B What is the magnitude F of the average force exerted on the ball by the wall? Express your answer in terms of variables given in the problem introduction and/or v;x. • View Available Hint(s) x'auz Submit Previous Answers X Incorrect; Try…

Jill threw a dodgeball completely horizontal in x-direction with velocity of +5 m/s and mass of .5 kg. At the same time her friend threw a dodgeball with the same mass in the -x direction and a velocity of -2 m/s. The balls hit each other, and Jill's ball was deflected 30° above the original path, while her friend's deflected 20⁰. below the initial path. a. Ignoring gravity, solve the velocity of each ball after the collision, using a free body diagram. b. If both balls had a magnitude of 3 m/s, how much kinetic energy was "lost" during the collision?

The figure shows a distribution of several objects, in which m1 = 3.0 kg,   m2 = 2.0 kg, and m3 = 1.0 kg a. What is the x-coordinate of thesystem’s center of mass?A. 1.67 mB. 1.83 mC. 2.5 mD. 2.75 mE. None of these b. What is the y-coordinate of thesystem’s center of mass?A. 1.5 mB. 1.83 mC. 2.17 mD. 2.75 mE. None of these