2. A 2.75-kg cat moves in a straight line (the x- axis). The figure shows a graph of the x- v̟ (m/s) 12.0 component of this cat's velocity as a function of 10.0 8.0 6.0 4.0 2.0 time. (a) Find the maximum net force on this cat. When does this force occur? 2.0 4.0 6.0 8.0 10.0 (b) When is the net force on the cat equal to zero? (c) What is the net force at time 8.5 s?

A man is trying to move an object (m 14.0 kg) by pulling upward on the rope at an angle of 53° above the horizontal. The coefficient of kinetic friction is 0.300 between the object and the ground. The tension in the rope is 150 N. What is the acceleration of the object? 53 O 6.08 m/s2 O 6.86 m/s2 O 3.50 m/s2 7.77 m/s2 6.82 m/s2

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.

Question 16 A block slides down a frictionless plane that makes an angle 30° with the horizontal. The magnitude of the acceleration in m/s² of the block is 8.5 O 9.8 O 5.7 O 4.9

You place a crate of mass 40.9 kg on a frictionless 2.64-meter-long incline. You release the crate from rest, and it begins to slide down, eventually reaching the bottom 1.52 s after you released it. What is the angle of the incline?      17.6 degrees      13.5 degrees      21.6 degrees      25.9 degrees

You place a crate of mass 20.3 kg on a frictionless 2.61-meter-long incline. You release the crate from rest, and it begins to slide down, eventually reaching the bottom 1.01 s after you released it. What is the angle of the incline?     37.7 degrees     31.4 degrees     44.0 degrees     57.2 degrees

2. You place a crate of mass 37.0 kg on a frictionless 4.65-meter-long incline. You release the crate from rest, and it begins to slide down, eventually reaching the bottom 1.37 s after you released it. What is the angle of the incline?     42.4 degrees     55.1 degrees     36.4 degrees     30.3 degrees

You place a crate of mass 26.3 kg on a frictionless 4.29-meter-long incline. You release the crate from rest, and it begins to slide down, eventually reaching the bottom 1.66 s after you released it. What is the angle of the incline?     18.5 degrees     22.2 degrees     26.6 degrees     20.4 degrees

A magician pulls a tablecloth from under a 200 g mug located 15.0 cm from the edge of the cloth. The cloth exerts a friction force of 0.100 N on the mug and is pulled with a constant acceleration of 3.00 m/s2. How far does the mug move relative to the horizontal tabletop before the cloth is completely out from under it? Note that the cloth must move more than 15 cm relative to the tabletop during the process.