A 0.6 ton motor is moving on a leveled highway at a speed of 108 km/hr. How large is a retarding force (in Newton) is required ?to stop it in a distance of 0.007 km
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- By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?A 0.6 ton motor is moving on a leveled highway at a speed of 108 km/hr. How large is a retarding force (in Newton) is required to stop it in a ?distance of 0.007 kmA 2000kg truck starts at rest and reaches a speed of 15 m/s over a time period of 5s. What is the value of the force required to do this? Express answer in Newtons.
- Assume a 2510 kg truck is accelerating up a hill with an 18 o incline from an initial speedof 8.33 m/s. If the truck reaches a maximum speed of 27.0 m/s and gains an elevation of19.5 m. what is the applied force from the engine?A child pushes on a toy wagon with a net force of 20.0N. the wagon accelerates from a speed of 0.500m/s to a 50% greater speed while it goes 5.00m find its mass.What force in kgf will accelerate a mass of 50kg at the rate of 10 m/sec2 considering friction of 0.001 between the block and the surface with 30 degrees inclination?
- A bicyclist and his bicycle have a mass of 105 kg. What forces is necessary to bring him to rest when he is traveling at 25 m/sec and must stop to avoid a tree 4.0 m in front of him?A 20-Mg train is traveling at a speed of 50 m/s at an angle of 10o. But the driver noticed that the bridge 300-m ahead is missing. At once, he pulls the break, thus applying a frictional resistance of Ff = 1000 N. At the same time Super Botting pushes back the train with a force of Fs=(123)d +100, where d is the distance that the train travels before stopping. Determine the stopping distance d, and mention whether or not Superperson would be able to save the train.A student wants to angle a ramp such that if she releases a 2.8kg cart at the top of a ramp, the cart will travel 210cm and hit the end of the ramp in 1.6s. Neglect backwards friction and drag. What does the magnitude of the net force on the cart need to be? What does the magnitude of the cart's acceleration need to be? At what incline angle (0) does the ramp need to be slanted? m/s2 What will be the maximum speed of the cart? m/s cannot be detem check answers
- Disturbed by speeding cars outside his workplace, Nobel laureate Arthur Holly Compton designed a speed bump (called the "Holly hump") and had it Installed. Suppose a 1800-kg car passes over a hump In a roadway that follows the arc of a cirde of radlus 20.0 m as in the figure below. (a) If the car travels at 29.4 km/h what force does the road exert on the car as the car passes the highest point of the hump? magnitude direction (b) What is the maximum speed the car can have without losing contact with the road as it passes this highest point? km/hThe crate of mass m= 31 kg is at rest at A on the theta=7o incline. The coefficients of static and kinetic friction between the crate and the incline are mus=0.385 and muk=0.308 a) What will the crate’s final velocity be? b) If energy is lost or increased, where did it go?Two constant forces act on a 5.00-kg object moving in the xy-plane, as shown in the figure below, Force F, is 25.0 N at 0 = 37.0° from x-axis, while F = 40.0 N at o = 37.0º from y-axis. At time t = 0, the object is at the origin and has velocity v, (4.0i + 2.5j) m/s. Using the unit-vector notation (a) Find the total force on the object and its acceleration, (b) What is the object's velocity at the instant t = 3.00 s?, (e) What is its location at time t = 3.0 s?, (f) What is its kinetic energy at this moment?, and (g) How much work is done by the total force in this time? y F2 F1 m