Sally finds herself stranded on a frozen pond so slippery that she can't stand up or...
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Sally finds herself stranded on a frozen pond so slippery that she can't stand up or walk on it. To save herself, she throws one of her heavy boots horizontally, directly away from the closest shore. Sally's mass is 57.0 kg, the boot's mass is 5.0 kg, and Sally throws the boot with speed equal to 30.0 m/s. For all parts, assume the ice is frictionless. 1) What is Sally's speed immediately after throwing the boot? m/s Submit You currently have 2 submissions for this question. Only 5 submission are allowed. You can make 3 more submissions for this question. Your submissions: 3.26 X Computed value: 3.26 Feedback: Submitted: Thursday, March 30 at 5:30 PM 2) Where is the center of mass of the Sally-boot system, relative to where she threw the boot, after 10.0 s? The center of mass is located at the point where she threw the boot. The center of mass is located halfway between Sally and the boot. The center of mass is where Sally is. Submit You currently have 3 submissions for this question. Only 5 submission are allowed. You can make 2 more submissions for this question. Your submissions: A Submitted: Thursday, March 30 at 5:27 PM Feedback: Since the system starts at rest, the center of mass will not move. Therefore, the center of mass is located at the point where she threw the boot. 3) How long does it take Sally to reach the shore, a distance of 35.0 m away from where she threw the boot? s Submit You currently have 1 submissions for this question. Only 5 submission are allowed. You can make 4 more submissions for this question. Your submissions: Computed value: 12.73 Feedback: 12.73 X Submitted: Thursday, March 30 at 5:28 PM D www A bullet with mass 20 grams and velocity 100 m/s collides with a wooden block of mass 2 kg. The wooden block is initially at rest, and is connected to a spring with k = 800 N/m. The other end of the spring is attached to an immovable wall. What is the maximum compression of the spring? Note: You may assume that the spring is massless and that the collision between the bullet and the wooden block is completely inelastic. m Submit You currently have 0 submissions for this question. Only 5 submission are allowed. N E III A blue car with mass m = 424 kg is moving east with a speed of v = 19 m/s and collides with a purple truck with mass m = 1276 kg that is moving south with a speed of v = 13 m/s. The two collide and lock together after the collision. 1) What is the magnitude of the initial momentum of the car? kg-m/s Submit You currently have 0 submissions for this question. Only 5 submission are allowed. You can make 5 more submissions for this question. 2) What is the magnitude of the initial momentum of the truck? kg-m/s Submit You currently have 0 submissions for this question. Only 5 submission are allowed. You can make 5 more submissions for this question. 3) What is the angle that the car-truck combination travel after the collision? (give your answer as an angle South of East) Submit You currently have 0 submissions for this question. Only 5 submission are allowed. You can make 5 more submissions for this question. Sally finds herself stranded on a frozen pond so slippery that she can't stand up or walk on it. To save herself, she throws one of her heavy boots horizontally, directly away from the closest shore. Sally's mass is 57.0 kg, the boot's mass is 5.0 kg, and Sally throws the boot with speed equal to 30.0 m/s. For all parts, assume the ice is frictionless. 1) What is Sally's speed immediately after throwing the boot? m/s Submit You currently have 2 submissions for this question. Only 5 submission are allowed. You can make 3 more submissions for this question. Your submissions: 3.26 X Computed value: 3.26 Feedback: Submitted: Thursday, March 30 at 5:30 PM 2) Where is the center of mass of the Sally-boot system, relative to where she threw the boot, after 10.0 s? The center of mass is located at the point where she threw the boot. The center of mass is located halfway between Sally and the boot. The center of mass is where Sally is. Submit You currently have 3 submissions for this question. Only 5 submission are allowed. You can make 2 more submissions for this question. Your submissions: A Submitted: Thursday, March 30 at 5:27 PM Feedback: Since the system starts at rest, the center of mass will not move. Therefore, the center of mass is located at the point where she threw the boot. 3) How long does it take Sally to reach the shore, a distance of 35.0 m away from where she threw the boot? s Submit You currently have 1 submissions for this question. Only 5 submission are allowed. You can make 4 more submissions for this question. Your submissions: Computed value: 12.73 Feedback: 12.73 X Submitted: Thursday, March 30 at 5:28 PM D www A bullet with mass 20 grams and velocity 100 m/s collides with a wooden block of mass 2 kg. The wooden block is initially at rest, and is connected to a spring with k = 800 N/m. The other end of the spring is attached to an immovable wall. What is the maximum compression of the spring? Note: You may assume that the spring is massless and that the collision between the bullet and the wooden block is completely inelastic. m Submit You currently have 0 submissions for this question. Only 5 submission are allowed. N E III A blue car with mass m = 424 kg is moving east with a speed of v = 19 m/s and collides with a purple truck with mass m = 1276 kg that is moving south with a speed of v = 13 m/s. The two collide and lock together after the collision. 1) What is the magnitude of the initial momentum of the car? kg-m/s Submit You currently have 0 submissions for this question. Only 5 submission are allowed. You can make 5 more submissions for this question. 2) What is the magnitude of the initial momentum of the truck? kg-m/s Submit You currently have 0 submissions for this question. Only 5 submission are allowed. You can make 5 more submissions for this question. 3) What is the angle that the car-truck combination travel after the collision? (give your answer as an angle South of East) Submit You currently have 0 submissions for this question. Only 5 submission are allowed. You can make 5 more submissions for this question.
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