Question

The acceleration definition a (vf-vo/At Final velocity vf v0+a t Multiply by mass m*vf mvo+ m'aAt so that m'vf m'v+F At Momentum mass velocity Impulse F At Velocity and KE values in a collision would depend on the observer reference frame KE 0.5*m v v pp/2m when momentum p -m'v A lab frame observer reported that a 3 kg impactor-A moving at 15 m/s collided with a stationary 10 kg target-B on a smooth table. 1a- Find the velocity magnitude and direction of the zero momentum frame observer 1b- Find the final velocities after the collision in the lab frame if it was an elastic collision. A 5 kg projectile at a height 10 meters was launched at 30 degrees with 15 m/s. At the end of the flight, the projectile collided with ground and was thrown up vertically. 2a-- Draw the initial and final velocity vectors and measure the earth pulling vector and final velocity direction in digress, provide scale in drawing 2b- Draw the vector triangle representing the collision of the projectile and ground when the projectile bounced up vertically, provide scale in drawing. (Hint: the ground impulse pushed onto the incoming momentum such that the final momentum was vertical.) 2c- Measure the ground impulse, magnitude and direction. 2d In what the direction would the Earth move (because of the ground collision)? A 10 kg composite object traveling with velocity (29 m/s, 0 degree) had an internal disturbance such that the composite object was split into Object-A with 3 kg mass and Object-B with 7 kg mass. Object-A moved at an angle of 35 degrees while Object-8 moved at an angle of 290 degrees 3a.. Find the speed of Object-A. 3b- Find the magnitude of the internal disturbance force when the disturbance duration was 0.03 sec. 3c-- An observer XYZ moved with velocity (speed of Object-A, 35 deg). Draw the collision diagram as seen by Observer XYZ. Include angle information. Hint: An observer moving with velocity (2 m/s, 30 deg) would report that a tree moved with velocity (2 m/s, 210 degrees)

Answer 1