an ice skater sits at rest (4 pts) An ice skater sits at rest in the...
Three ice skaters meet at the center of a rink and each stand at rest facing the center, within arm’s reach of the other two. On a signal, each skater pushes himself away from the other two across the frictionless ice. After the push, skater A with mass mA = 80.0 kg moves in the negative y-direction at 3.50 m/s and skater B with mass mB = 75.0 kg moves in the negative x-direction at 4.00 m/s. Find the x-...
Three ice skaters meet at the center of a rink and each stands at rest facing the center, within arm's reach of the other two. On a signal, each skater pushes himself away from the other two across the frictionless ice. After the push, skater A with mass mA = 80.0 kg moves in the negative y-direction at 4.00 m/s and skater B with mass mB = 85.0 kg moves in the negative x-direction at 3.00 m/s. Find the x-...
Three ice skaters meet at the center of a rink and each stands at rest facing the center, within arm's reach of the other two. On a signal, each skater pushes himself away from the other two across the frictionless ice. After the push, skater A with mass mA = 75.0 kg moves in the negative y-direction at 4.00 m/s and skater B with mass mB = 80.0 kg moves in the negative x-direction at 3.50 m/s. Find the x-...
A young ice skater with mass 35.0 kg has fallen and is sliding on the frictionless ice of a skating rink with a speed of 20.0 m/s. a. What is the magnitude of her linear momentum when she has this speed? Express your answer with the appropriate units. b. What is her kinetic energy? Express your answer with the appropriate units. c. What constant net horizontal force must be applied to the skater to bring her to rest in 6.00 s?...
A 54-kg ice skater pushes off the wall of the rink, giving herself an initial speed of 3.5 m/s . She then coasts with no further effort. The frictional coefficient between skates and ice is 0.022. how far does she go before she stops?
A 54-kg ice skater pushes off the wall of the rink, giving herself an initial speed of 3.5 m/s. She then coasts with no further effort. The frictional coefficient between skates and ice is 0.025. How far does she go? Express your answer with the appropriate units.
An ice skater of mass m is given a shove on a frozen pond. After the shove, she has a speed of Vo = 2 m/s. Assuming that the only horizontal force that acts on her is a slight frictional force between the blades of the skates and the ice: Draw a free body diagram showing the horizontal force and the two vertical forces that act on her. Identify these forces. Use the work-energy theorem to find the distance the...
Two ice skaters stand at rest in the center of an ice rink. When they push off against one another the 70-kg skater acquires a speed of 0.69 m/s If the speed of the other skater is 0.88 m/s. What is the skater's mass? Express your answer using two significant figures. m_2 =
4:15 PM Thu 21 Nov webassignet 13. +-12 points SerCP11GE 6.P.030. My Notes Ask Your Teacher Three ice skaters meet at the center of a rink and each stands at rest facing the center, within arm's reach of the other two. On a signal, each skater pushes himself away from the other two across the frictionless ice. After the push, skater A with mass ma - 70.0 kg moves in the negative y-direction at 2.00 m/s and skater B with...
6. A 78 kg ice skater at rest throws a 6.0-kg bowling ball with a horizontal velocity of -3.0 msec What is the resulting velocity of the ice skater? 7. A 0.20-kg model railroad car moving with a horizontal velocity of 0.24 m/sec is struck from behind by a 0.42-kg car traveling at 0.45 m/sec. If the two cars stick together when they collide, what will their final velocity? 8. A 895-kg freight car coasts at 3.1 m/sec. A crane...