You are renting a cabin in lake Tahoe that is near a hill. Your car is outside and is 2000kg. An avalanche starts from rest down a 370 slope to the horizontal . The hill is 100m high. The mass of the snow coming down the hill is 3000kg. You can consider the hill to be frictionless. The snow collides with the car at the bottom of the hill and the car and the snow move together until they come to a stop after 48m due to a drag force. What was the drag force?
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You are renting a cabin in lake Tahoe that is near a hill. Your car is outside and is 2000kg. An avalanche starts from rest down a 370 slope to the horizontal . The hill is 100m high. The mass of the snow coming down the hill is 3000kg. You can consider the hill to be frictionless. The snow collides with the car at the bottom of the hill and the car and the snow move together until they come to a stop after 48m due to a drag force. What was the drag force?
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- A boy slips off a spherical ice mound of radius 7. At what height above the ground does the boy lose contact with the ice? Assume the ice is frictionless.You wake up one morning to find yourself in a strange room with opaque walls, and no visible doors or windows. You decide to do some experiments to find out more about your strange situation. Your own body mass is 72.3 kg. You pick up an object and drop it from rest, starting at a height of 1.52 meters above the floor, and it hits the floor 0.223 seconds later. You can ignore air resistance. Based on the outcome of this experiment, when you step on the scale provided for you, what weight will it register for your body? 1 2,210 N 2 2,947 N 3 4,420 N 4 709.3 NFigure P7.44 45. Review. Two constant forces act on an object of mass m = QIC 5.00 kg moving in the xy plane as shown in Figure P7.45. Force F, is 25.0 N at 35.0°, and force F, is 42.0 N at 150°. At time t = 0, the object is at the origin and has velocity (4.00î + 2.50j) m/s. (a) Express the two forces in unit-vector notation. Use unit-vector notation for your other answers. (b) Find the total force exerted on the object. (c) Find the object's acceleration. Now, considering the instant t = 3.00 s, find (d) velocity, (e) its position, its kinetic energy the object's (f) from mv, and (g) its F2 F kinetic from 150° energy mu + EF · A. (h) What conclusion can you draw by comparing the answers to parts (f) and (g)? 35.0° m Figure P7.45