6. + 1.1/4 points Previous Answers Hill Collision 1 My Notes You push a box of mass 20.5 kg with your car up to an icy hill slope of irregular shape to a height 5 m. The box has a speed 13.1 m/s when it starts up the hill, the same time that you brake. It then rises up to the top (with no friction) to a flat area before coming to a rest when hitting a box of mass...
6. + -17 points Hill Collision III My Notes You push a box of mass 24.4 kg with your car up to an icy hill slope of irregular shape to a height 5.1 m. The box has a speed 13.4 m/s when it starts up the hill, the same time that you brake. It then rises up to the top (with no friction) to a flat area before elastically colliding with a smaller box of mass 22 kg. The boxes...
A 5.0 kg box slides down a 5.0-m-high frictionless hill, starting from rest, across a 2.0-m-wide horizontal surface, then hits a horizontal spring with spring constant 500 N/m. The other end of the spring is anchored against a wall. The ground under the spring is frictionless, but the 2.0-m-wide horizontal surface is rough. The coefficient of kinetic friction of the box on this surface is 0.25. (a) What is the speed of the box just before reaching the rough surface?...
Imagine that you are in a car that is traveling up a bridge that is inclined at an angle of 14.5 degrees from the horizontal. The car's speed is 34.0 mi/hr (15.20 m/s). At time t = 0 you open your window and illegally drop a soda can from your rest frame over the edge of the bridge. Your height above ground level is 85.0 m. How far does the can travel horizontally before hitting the ground? Neglect air resistance....
I need help with problem 39 parts b,c,d Unit 7. Work and Energy In Class Packet Name: 36. A 2.45 kg rock is dropped from the top of a 15.5 m vertical cliff a. What is the potential energy of the rock relative to the base of the cliff before it is dropped? b. What is the kinetic energy of the rock just before it hits the ground below? c. What is the velocity of the rock at a point...
A wheel rolls up a 3.5m hill without slipping. The wheel has a mass of 20kg, a radius of 0.4 m and a radius of gyration of 0.3m. What is the minimum required speed of the center of the wheel (ve) at the bottom o the hill, so that it will make it to the top of the hill? Wheel: R 0.4 m k 0.3 m m 20 kg 3.5 m ve? 4. Piston B is confined to move in...
A red car with a 70kW engine and a mass of 1335kg accelerates at full power for 2s from rest along a level stretch of road heading east before going down a 3m high hill. The driver puts the car in neutral to accelerate as they coast down the hill. Some distance beyond the hill on another level stretch of road is an intersection. A blue car of mass 1800kg drives south at 60km/h into this intersection in front of...
ski lifts are too scary for you, so you let a cord drag you up the hill, while your snowboard slides along the ground. oou are modeled as a 50-kg box, of course)Trying to save energy, the ski company runs the cord over a pulley at the top of the mountain, with a 40-kg mass hanging over a cliff on the other end of the cord. The ski hill makes an angle of 30 with the horizontal. a It doesn't...
Part C Review A 4.5 kg box slides down a 5.2-m -high frictionless hill starting from rest, across a 2.3-m -wide horizontal surface then hits a horizontal spring with spring constant 470 N/m How far is the spring compressed? Express your answer using two significant figures The other end of the spring is anchored against a wall The ground under the spring is frictionless, but the 2.3-m- long horizontal surface is rough. The coefficient of kinetic friction of the box...
A box of mass 11[kg] is being pushed up a frictionless inclined plane by a force of 700[N]. The slope of the plane is 37 degrees. The box is pushed at 37 degrees – so the push is in exactly the same direction as the direction of the plane. Assume that the box was initially at rest. Suggestion: Draw a picture of this situation Draw a free body diagram for the box b. Draw a tilted free body diagram such...