After seeing a giant rock rolls into the highway, the driver slan emergency escape ramp. The angle between the ramp and the velocity v of the truck is 30.0 m/s right after entering the ramp ramp) is 0.720, then how far along the ramp does the truck trav *Use work-energy theorem to ver this question and assume
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- A crate of mass M is initially at rest at the highest point of an inclined plane, which has a height of 5.8 m and makes an angle of theta=27 degrees with respect to the horizontal.  after letting go of the object call you notice it to be traveling at v=0.35 m/s a distance d after the end of the inclined plane as shown. The coefficient of kinetic friction between the crate and the plane is up= 0.1, and the coefficient of friction on the horizontal surface is ur=0.2. (A) what is the speed of the crate, in meters per second, just after it leaves the inclined plane? (B) find the distance, d, in meters.A small vochito of mass 607 kg breaks down as it climbs a hill with an angle of inclination of 17° hel. coefficient of friction between the car and the surface is 0.75. What is the magnitude of its acceleration as it moves down the ramp?A 250 N block is initially at rest on a flat surface that is inclined at 30°. if the coefficient of the static friction is 0.30, find the force required to start the block moving up the plane.
- the driver of a car on a horizontal road makesan emergency stop by applying the brakes so that all four wheelslock and skid along the road.The coefficient of kinetic friction betweentires and road is 0.40.The separation between the front andrear axles is L = 4.2 m, and the center of mass of the car is locatedat distance d =1.8 m behind the front axle and distance h = 0.75 mabove the road. The car weighs 11 kN. Find the magnitude of (a)the braking acceleration of the car, (b) the normal force on eachrear wheel, (c) the normal force on each front wheel, (d) the brakingforce on each rear wheel, and (e) the braking force on eachfront wheel. (Hint: Although the car is not in translational equilibrium,it is in rotational equilibrium.)A 4.45 x 104N truck is travelling at 100 km/h. If the coefficient of friction between the tires and the roadway is 0.50, whatis the minimum distance the truck will go before stopping?A parachutist (mass, m = 85 kg including parachute) has an initial velocity, v0 = 52.8 ms-1, immediately after the parachute opens. The drag force provided the parachute varies as a function of velocity, such that Fd = kv2 where k = 13.7 kg/m. Calculate the time it takes in seconds for the velocity to reach half the initial velocity. What is the maximum speed (terminal velocity) in km/h of the parachutist when the parachute is open?
- a 2.5 kg mass is initially at rest on a horizontal surface. Am applied force acts in the + x direction resulting in a displacement of 1.50 m. If the speed of the mass is 4.00 m/s at the 150 m mark and the applied force is 22.0 N, what is the coefficient of kinetic friction?A 5.00 kg block is thrown up an inclined plane with an initial speed of 8.00 m / s which stops after traveling 3.00 m along the plane, which is inclined at an angle of 30 , 0 ° from the horizontal. For this motion determine the coefficient of kinetic friction between the block and the surface.At the scene of an accident, two traffic experts appear to determine which of the drivers was at fault considering that it was a highway where the speed limit is 80 km / h. The data collected in the field indicate that the vehicles stuck and skidded together a length of 25 m on the pavement whose dynamic friction coefficient is μk = 0.30. Considering that the masses of vehicles A and B are 2300 kg and 1500 kg, respectively, specify which of the cars was speeding at the moment of impact and by how much it exceeded the speed limit. Express your result in km / h for the purposes of the expertise.
- A box of unknown mass is sliding with an initial speed vi = 4.90 m/s across a horizontal frictionless warehouse floor when it encounters a rough section of flooring. The coefficient of kinetic friction between the floor and the box is 0.625. How far does the box slide before stopping?Enter an expression for the magnitude of the force of the bottom-most parcel on the center parcel valid for any value of the vertical acceleration, ay, using only the parameters provided in the paletteA truck is traveling at 11.1m / s down a hill when the brakes on all four wheels lock. The hill makes an angle of 15.0 with respect to the horizontal. The coefficient of kinetic friction between the tires and the road is 0.750 How far does the truck skid before coming to a stop?