Two balls held together by a piece of plastic explosive move together with velocity having x-component-3.67. Ball #1 has mass 2.21 , ball #2 has mass 1.36, and the mass of the plastic explosive is negligible. Assume this is an isolated system. Later, the explosive explodes and the two balls fly apart and ball #1 is moving with velocity having x-component -7.34. What is the x-component of the velocity of ball #2? All quantities are given in SI units and the answer should be given as a positive or negative number in Sl units. Only type a number into the answer box, do not type in units.

A 3.29 kg object initially moving in the positive x-direction with a velocity of +4.50 m/s collides with and sticks to a 1.77 kg object initially moving in the negative y-direction with a velocity of -2.61 m/s. Find the final components of velocity of the composite object. (Indicate the direction with the sign of your answer.) Vfx = m/s Vfy = m/s

What types of collisions conserve total momentum of the system? O Inelastic Collisions O Both elastic and inelastic collisions Elastic Collisions No collisions conserve total momentum What types of collisions conserve total kinetic energy of the system? O Inelastic Collisions O Both elastic and inelastic collisions No collisions conserve total kinetic energy Elastic Collisions

Two objects of mass 8 g and 5 g, respectively, move parallel to the x-axis, as shown. The 8 g object overtakes and collides with the 5 g object. Immediately after the collision, the y-component of the velocity of the 8 g object is 9 m/s upward. What is the y-component of the velocity ~v of the 5 g object immediately after the collision? 1. ~vy = 14.4 m/s upward2. ~vy = 5.625 m/s downward3. ~vy = 9 m/s upward4. ~vy = 9 m/s downward5. ~vy = 5.625 m/s upward6. ~vy = 14.4 m/s downward

The mass of a regulation tennis ball is 57.0 g (although it can vary slightly), and tests have shown that the ball is in contact with the tennis racket for 30 ms. (This number can also vary, depending on the racket and swing.) We assume a 59.0 g ball and a 26.0 ms contact time in this problem. In the 2011 Davis Cup competition, Ivo Karlovic made one of the fastest recorded serves in history, which was clocked at 156 mi//h (70 m/s). Part A: What impulse did Karlovic exert on the tennis ball in his record serve? Take the +x direction to be along the final direction of motion of the ball. Part B: What average force did Karlovic exert on the tennis ball in his record serve? Part C: If his opponent returned this serve with a speed of 55.0 m/s, what impulse did his opponent exert on the ball, assuming purely horizontal motion? Take the +x direction to be in the direction the ball is traveling before it is hit by the opponent. Part D: If his opponent returned this serve with a speed of 55.0…

A car with a mass of 980 kg is initially traveling east toward an intersection with a speed of vc = 20.2 m/s and a 1500 kgpickup is traveling north toward the same intersection. The car and truck collide at the intersection and stick together. After the collision, the wreckage (car and truck) moves off in a direction of 43.0° above the x-axis. Determine the initial speed of the truck and the final speed of the wreckage in meters per second. initial speed of the truck m/sfinal speed of the wreckage m/s

One billiard ball (mass 118 grams) is moving due east at 5.0 m/s. A tennis ball (mass 321 grams) is moving due west at 4.0 m/s. The two balls have a glancing blow, which means they do not bounce along the same line as their original motion, but rather, deflect at an angle to their original paths. You measure the billard ball's motion as it moves 26.0° north of east, and you measure that the tennis ball is travelling 19.0° south of west. What is the speed of the billiard ball after the collision? Your Answer: Answer

The pendulum apparatus in the video has a total mass of 578 grams. The pendulum rod has a small mass of 20 grams so you can treat all the mass of the pendulum as if it were hanging at the end which is called the “bob”. The mass of the rod should be taken into account in determining the center of mass of the apparatus which is 71.3 cm (not the length of the pendulum). A marble which hass a mass of 10 g is fired at the pendulum bob which has clay on it which allows the marble to stick to it.   Derive a formula for measuring the velocity of the marble (vm) as a function of the mass of the marble mm, the mass of the marble/bob mmb and the velocity of the marble and bob vmb using the conservation of momentum.

A block with mass M = 5.60 kg is sliding in the positive x-direction at Vi = 8.00 m/s on a frictionless surface when it collides elastically in one dimension with a stationary block with mass m = 1.30 kg. Determine the velocities, Vf and vf, of the objects after the collision. Vf = ? vf = ?

Two gliders with mA = 0.50 kg, mB = 0.40 kg, collide elastically on a frictionless surface. Glider A with a spring bumper initially moves to the right with the speed of 4.0 m/s and glider B with a spring bumper initially moves to the left with the speed of 7.0 m/s. What is the final velocity of the glider A after collision?