How fast will the wagon accelerate
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A: ma=mgsinθ+μkmgcosθa=gsinθ+μkcosθa=9.8 m/s2sin24°+0.20cos24°=5.7766 m/s2
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Q: A man pushing a crate of mass m = 92.0 kg at a speed of v=0.870 m/s encounters a rough horizontal…
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Q: A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.865 m/s encounters a rough horizontal…
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A boy is pushing a 25 keg wagon with a force of 300 N. The coefficient of friction between the wagon and the ground is 0.3. How fast will the wagon accelerate?
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- A 5 kg block is given an initial velocity of 10 m/s. If there is a friction force of 13 N opposing the motion of the block, how far will the block move before coming to a rest?Bank robbers have pushed a 1000 kg safe to a third-story floor-toceiling window. They plan to break the window and lower the safe 10.0 m to their truck. Not being too clever, they stack up 500 kg of furniture, tie a rope between the safe and the furniture, and place the rope over a pulley. Then they push the safe out of the window. The coefficient of kinetic friction between the furniture and the floor is 0.5. The rope would break if the force on it exceeds 5000 N. a) Does the rope break? b) What is the acceleration of the safe? c) What is the safe’s speed when it hits the truck?A hockey puck with mass 0.166 kg is pushed across the ice with a constant force of 0.89 N. The coefficient of kinetic friction between the puck and the ice is 0.22. After a distance of 2.6 m, what is the puck's speed in m/s?
- A 20-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 28 N. Starting from rest, the sled attains a speed of 2.6 m/s in 9.4 m. Find the coefficient of kinetic friction between the runners of the sled and the snow.A 1,596.6 kg car is skidding to a stop on a level road with a coefficient of kinetic friction = 0.6. How fast was the car going if it leaves 66 m skid marks?A 0.19 kg hockey puck slides across an icy surface and experiences a small friction force of 0.09 N. If the puck is given an initial velocity of 4m / s how far does it slide before stopping? Your answer should be in units of m but you should only submit the number for your answer.
- Tom reached a speed of 29 m/s in the downhill skiing competition. Suppose he left the slope at that speed and then slid freely along a horizontal surface. If the coefficient of kinetic friction between his feet and the ground was 0.27 and his final speed was half of his initial speed, find the distance he traveled?A girl on a skateboard (total mass of 40 kg) is moving at a speed of 10 m/s at the bottom of a long ramp. The ramp is inclined at 20° with respect to the horizontal. If she travels 14.2 m upward along the ramp before stopping, what is the net frictional force on her?A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.880 m/s encounters a rough horizontal surface of length = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.357 and he exerts a constant horizontal force of 293 N on the crate. (a) Find the magnitude and direction of the net force on the crate while it is on the rough surface. magnitude N direction --Select--- (b) Find the net work done on the crate while it is on the rough surface. (c) Find the speed of the crate when it reaches the end of the rough surface. m/s
- A dog with a mass of 57.0 kg slides down a wet slope with negligible friction. The dog starts from rest and has a speed of 2.10 m/s at the bottom. What is the height of the slope (in m)?A toy car has a friction coefficient of 0.03. On a 30 degree incline starting from rest, what distance will the toy car have covered after 5 seconds?A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.860 m/s encounters a rough horizontal surface of length ℓ = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.350 and he exerts a constant horizontal force of 291 N on the crate (a) Find the magnitude and direction of the net force on the crate while it is on the rough surface.magnitude_____N direction (b) Find the net work done on the crate while it is on the rough surface. _____J(c) Find the speed of the crate when it reaches the end of the rough surface. ______m/s