A skater on a rink is travelling with a velocity 4.2M+0.72J m s i when she...
Two ice skaters, Daniel (mass 70.0 kg ) and Rebecca (mass 45.0 kg ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at 14.0 m/s before she collides with him. After the collision, Rebecca has a velocity of magnitude 7.00 m/s at an angle of 55.1 ∘ from her initial direction. Both skaters move on the frictionless, horizontal surface of the rink. Part A What is the magnitude of...
. Two ice skaters collide on the ice. A 39.6-kg skater moving South at 6.21 m/s collides with a 52.1-kg skater moving East at 4.33 m/s. The two skaters entangle and move together across the ice. Determine the magnitude and direction of their post-collision velocity
A 57.7 kg ice skater, moving at 15.4 m/s, crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 7.7 m/s. Suppose the average force a skater can experience without breaking a bone is 4520 N. If the impact time is 0.11 s, what is the magnitude of the average force each skater experiences? Answer in units of N.
Lineman A (m = 100kg) is travelling with a velocity of 4 m/s when he collides with Lineman B (m=90kg), who has a velocity of -4.5m/s. If momentum is conserved and Lineman B is completely stopped in his tracks, what happens to the velocity of Lineman A after the collision?
A skater with a mass of 100kg is traveling East at 5m/s when he collides with another skater of mass 50kg heading North at 10 m/s. The 100kg skater goes off at 6m/s F. 45degree N after the collision. What velocity (speed and direction) does the 50kg skater go off in after the collision? A skater with a mass of 100kg is traveling East at 5m/s when he collides with another skater of mass 50kg heading North at 10 m/s....
At the center of a 50-m-diameter circular ice rink, a 79 kg skater traveling north at 2.4 m/s collides with and holds onto a 62 kg skater who had been heading west at 3.9 m/s. Part A How long will it take them to glide to the edge of the rink? Part B Where will they reach it? Give your answer as an angle north of west.
need help with this two questions, please !!
Two ice skaters, Daniel (mass 60.0 kg) and Rebecca (mass 45.0 kg), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at 13.0 m/s before she collides with him. After the collision, Rebecca has a velocity of magnitude 7.00 m/s at an angle of 54.1" from her initial direction. Both skaters move on the frictionless, horizontal surface of the rink. What is...
During a pair ice skating, a 60-kg female ice skater leaps into the air and is caught by her 70-kg partner who was stationary. a. Assuming negligible friction on ice what is the velocity of the pair if the horizontal velocity of the female skater right before she was caught in the air was 5 m/s? b. What is the total KE before she was caught? What is the total KE after she was caught? c. Knowing that the skaters...
A 3 kg object travelling to the right at 8 m/s collides with a 6 kg object travelling to the left at 9 m/s. After the collision, the second object is travelling to the right at 10% of its original speed. What is the final velocity of the first object?
A4 kg block travelling with velocity VB = 6 m/s collides with a wall. As a result of the collision, the direction and magnitude of the velocity of the block has changed and the block is travelling with velocity VA = 2 m/s. What is the magnitude of the average force (in N) exerted by the wall on the block if the block was in contact with the wall for 0.008 s? VB VA Before After
> Can you solve also the fraction of the initial kinetic energy loss ?
Davide Wu Tue, Nov 30, 2021 7:41 AM