A 5kg box rests on a flat, level floor. There is friction between this box and the floor with  μs=0.40 and  μk=0.30. The box is pushed horizontally with the minimum force required to get it moving and continues to be pushed with this force afterwards. How far has the box moved after 8s. You can assume g=10 m/s2

QUESTION 1 We start with some review problems A crate of mass 20.6 kg rests on a level surface, with a coefficient of kinetic friction 0.262. You push on the crate with an applied force of 351 N. What is the magnitude of the crate s acceleration as it slides?   A 11.58 m/s^2   B 25.56 m/s^2   C 14.47 m/s^2   D 17.04 m/s^2

Determine the force Q-> when the block moves with constant velocity. Express your answer in vector form.

Many birds can attain very high speeds when diving. Using radar, scientists measured the altitude of a barn swallow in a vertical dive; it dropped 208 m in 3.0 s. The mass of the swallow was estimated to be 0.018 kg, and its cross-section area as 5.6 x 10-4 m2. What was the drag coefficient for this swallow as it dove?

7. In figure, a cord pulls a box of sea biscuits up along a frictionless plane inclined at angle = 30.0°. The box has mass m = 5.00 kg, and the force from the cord has magnitude T = 25.0 N. What is the box's acceleration a along the inclined plane? The box accelerates. (a) Cord (6) Normal force 16M Cord's pull Gravitational force

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Time left 0:20:32 An amusement park in Dubai has a ramp which is frictionless. A child drops a smooth object and it slides down the ramp and comes down through a height 4 m. What distance is necessary to stop the object on the flat track if the coefficient of friction is 0.4? h. Answer:

A 3 kg particle moves along an x axis, being propelled by a variable force directed along that axis. Its position is given by x = 2 m + (2 m/s)t + ct2 - (3 m/s³)t³ with x in meters and t in seconds.The factor c is a constant. At t = 4 s the force on the particle has a magnitude of 33N and is in the negative direction of the axis. What is c? Number Units

A 2kg box is given a swift kick, and then allowed to slide along the ground until friction slows it to a stop. If the coefficient of static friction between this box and the ground is 0.7, and the coefficient of kinetic friction is 0.5, what is the magnitude of the acceleration that this box will experience? *   4.9 m/s/s 2.7 m/s/s 6.3 m/s/s 9.8 m/s/s

1. You are tasked with designing the runway on an aircraft carrier. The minimum speed for the F/A18 Hornet is 200 mph. The Hornet weighs 40,000 lbf and its twin engines provide a thrust of ~40,000 lbf combined, providing a max acceleration of 1g.a. How long must the deck be to takeoff unassisted? Give the answer in ft. b. This is most likely longer than your typical ~450 ft carrier. What acceleration must you achieve with both the engines and with a catapult system together to reach the required minimum speed by the end of the deck? c. What net force (combined engines and catapult) must be applied to the plane to get the acceleration in b? d. Do you think the plane will be able to use disk brakes on its tires to stop when landing?Use your knowledge of friction to make your argument. Also know that their coefficient of friction is ~1.