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 0.356 and he exerts a constant horizontal force of 276 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 44.96 V N direction opposite as the motion of the crate (b) Find the net work done on the crate while it is on the rough surface. -29.22 (c) Find the speed of the crate when it reaches the end of the rough surface. 1.2

A warehouse worker is pushing a 90.0 kg crate with a horizontal force of 276N at a speed of v = 0.875m/s across the warehouse floor. He encounters a rough horizontal section of the floor that is 0.75 m long and where the coefficient of kinetic friction between the crate and floor is 0.353. (a) Determine the magnitude and direction of the net force acting on the crate while it is pushed over the rough section of the floor. magnitude Ndirection ---Select--- up down in the same direction as the motion of the crate in the opposite direction as the motion of the crate (b) Determine the net work done on the crate while it is pushed over the rough section of the floor. J (c) Find the speed of the crate when it reaches the end of the rough surface. m/s

A warehouse worker is pushing a 90.0 kg crate with a horizontal force of 291 N at a speed of v = 0.850 m/s across the warehouse floor. He encounters a rough horizontal section of the floor that is 0.75 m long and where the coefficient of kinetic friction between the crate and floor is 0.351. m (a) Determine the magnitude and direction of the net force acting on the crate while it is pushed over the rough section of the floor. magnitude direction --Select--- (b) Determine the net work done on the crate while it is pushed over the rough section of the floor. (c) Find the speed of the crate when it reaches the end of the rough surface. m/s

A warehouse worker is pushing a 90.0 kg crate with a horizontal force of 300 N at a speed of v = 0.850 m/s across the warehouse floor. He encounters a rough horizontal section of the floor that is 0.75 m long and where the coefficient of kinetic friction between the crate and floor is 0.360. m (a) Determine the magnitude and direction of the net force acting on the crate while it is pushed over the rough section of the floor. magnitude Have you drawn a force diagram and identified all forces acting on the crate? N direction --Select-- X Have you drawn a force diagram and identified all forces acting on the crate? (b) Determine the net work done on the crate while it is pushed over the rough section of the floor. Can you write an expression for the net work done on the crate in terms of the net force acting on the crate? J (c) Find the speed of the crate when it reaches the end of the rough surface. Can you develop an expression for the final speed of the crate in terms of its initial…

At an accident scene on a level road, investigators measure a car's skid mark to be 78 m long. It was a rainy day and the coefficient of friction was estimated to be 0.30. use these data to determine the speed of the car when the driver slammed on (and locked) the brakes. (why does the car's mass not matter?)

A mass 8.46kg is initially moving with a speed 25.64 m/s up a plane inclined at an angle of 18.46deg to the horizontal. The coefficient of 0.435 static friction is μg = Ms The coefficient of kinetic friction is μ = 0.344. Determine how far up the incline the mass moves before coming to a stop (in m).

A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.870 m/s encounters a rough horizontal surface of length = 0.65 m as in the figure below. If the coefficient of v= kinetic friction between the crate and rough surface is 0.360 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. -27.3 X magnitude The response you submitted has the wrong sign. N direction opposite as the motion of the crate ✔ (b) Find the net work done on the crate while it is on the rough surface. 34.0 X The response you submitted has the wrong sign. J (c) Find the speed of the crate when it reaches the end of the rough surface. 0.573 x Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. m/s Need Help? Read It Watch It

You went on a drive late at night after having a fun party with the member of your company when you accidentally hit another car. The investigator observes a skid marks 25m long left by your 1500kg car. Your car skidded to stop on a concrete highway having a coefficient of kinetic friction with the tires of 0.80. Estimate your car's speed at the beginning of the skid?

A 1200-kg car is being driven up a 5 degree hill. The frictional force has a magnitude of 524 N. A force F is applied to the car by the road and propels the car forward. In addition to these two forces, two other forces act on the car: it's weight W and the normal force N directed perpendicilar to the road surface. The length of the road up the hill is 290 m. Calculate the magnitude of F so that the net work done by all the forces acting on the car is 1150 kJ.