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?
Express your answer with the appropriate units.
A young ice skater with mass 35.0 kg has fallen and is sliding on the frictionless...
On an essentially frictionless horizontal ice-skating rink, a skater moving at 2.8 m/s encounters a rough patch that reduces her speed by 47 % to a friction force that is 22 % of her weight. Use the work-energy principle to find the length of the rough patch.
Review Part A A speed skater moving to the left across frictionless ice at 8.5 m/s hits a 4.3-m-wide patch of rough ice. She slows steadily, then continues on at 6.1 m/s. What is the magnitude of her acceleration on the rough ice? Express your answer with the appropriate units. a= 1 Value Units Submit Request Answer
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.
Wilhelmina is an avid ice skater who is also taking physics with her friend Darcy. Wilhelmina is having a discussion with Darcy and is trying to relate her skating experience to the discussions in class about rotational kinetic energy and angular momentum. Darcy reminds Wilhelmina that the instantaneous angular momentum, , of a particle relative to an axis through an origin O is defined by the cross product of the particle's instantaneous position vector relative to O, , and its...
On an essentially frictionless, horizontal ice rink, a skater moving at 6.0 m/s encounters a rough patch that reduces her speed by 46 % due to a friction force that is 26 % of her weight. Use the work-energy theorem to find the length of this rough patch.
"On an essentially frictionless, horizontal ice rink, a skater moving at 4.3 m/s encounters a rough patch that reduces her speed by 42% due to a friction force that is 24% of her weight. Use the work—energy theorem to find the length of this rough patch."
A stationary skater with a mass of 80.0 kg and a moment of inertia (about her central vertical axis) of 3.00 kg-m2 catches a baseball with her outstretched arm. The catch is made at a distance of 1.00 m from the central axis. The ball has a mass of 145 g and is traveling at 20.0 m/s before the catch. (a) What linear speed does the system (skater + ball) have after the catch? (b) What is the angular speed...
An ice skater rotating in place on (essentially frictionless) ice extends her arms and as result loses 10% of her kinetic energy. There is no air resistance. Explain fully what has happened. By what percentage did she change her moment of inertia?
h2HW oblem 2.17 l Review Part A A speed skater moving to the left across frictionless ice at 8.8 m/s hits a 4.5-m-wide patch of rough ice. She slows steadily, then continues on at 5.5 m/s. What is the magnitude of her acceleration on the rough ice? Express your answer with the appropriate units Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining Provide Feedback Type here to search 2 3 5 oER
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...