Page < 4. Box 1 (m₁ = 1.5 kg) sits on a frictionless surface that is inclined at an angle ẞfrom horizontal. It is connected to box 2 (m² = 1.2 kg) using a lightweight flexible cord that passes over a lightweight frictionless pulley (see figure). When a vertical force F of magnitude 5.0 N pushes up on box 2, the box has a downward acceleration of 4.0 m/s². Find a. the tension in the connecting cord, and b. the angle ẞ of the inclined surface. 1701 2 of 2 - ZOOM + mo

A push of magnitude P acts on a box of weight W as shown in the figure. The push is directed at an angle 0 below the horizontal, and the box remains a rest. The box rests on a horizontal surface that has some friction with the box. The normal force on the box due to the floor is equal to: O W + P cos 0. O W + P sin 0. OW-P sin 0. O W + P. O W. W 0 P

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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.

skydiving tunnels have become popular attractions, appealing in part to those who would like a taste of skydiving experience but too overwhelmed by the fear of jumping out of plane at serveral thousand feet. skydiving tunnels are vertical wind tunnel through which air is blown at high speeds allowing visitors to experience body flight. jill decides to try a skydiving tunnel.  inside the tunnel she changes her orientation anf for an instant her 68.9kg body momentarily experiences a upward force of air resistance of 455N. determine her  acceleration  during this  moment in time. is it positve or negative?

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4. A 70 Kg athlete leaps straight up into the air from a trampoline with an initial speed of 7.0 m/s. Take y = 0 to be the position the athlete leaves the trampoline and ignore air resistance. how shoqes di nwob edhW (1 912 a. What is the maximum height the athlete reaches? Step 1) Draw a picture and list the value of all variables at the athlete's starting position and ending position. .£q912 ni nolicups or otni gulą of been woy z9ulev ri telual 10 11J (S 9912 Step 2) Is energy conserved? Yes = write the conservation of energy equation. No write the equation for non- conserved work. 102 (E 9912 nobil yd snob how s Step 3) Plug in values to the equation from step 2 and solve for maximum height. srij 11 m 0.00 to trigisil s of brucny ont moit siqaq to llut 101 Serler abin Toravste srit gnol wor 1010 smit tot svioz uoy tel lliw tens potten b. Solve this problem with kinematic equations and confirm the answers are the same. 0.000,21 A (8 21 (1 q912 Aitnsbl (S q912 smils sris tol svio2 (8…

Vo-Om/s H-10m ground Mr. Stick lives on the planet Teflon where the force due to gravity is different than that of Earth. Mr. Stick drops a small water balloon off the top of a building (Vo-0m/s). He releases the balloon at a height H=10m above the surface of Teflon. The balloon hits the ground 1.8 seconds after it is dropped and has a velocity V1 on impact. (Neglect Teflonian air resistance.) What is the acceleration due to gravity on the planet Teflon? ) 6.2 m/s² 3.5 m/s? 9.8 m/s? 11.6 m/s? 8.3 m/s2

Two packages at UPS start sliding down the 20∘ ramp shown in the figure. Package A has a mass of 3.00 kg and a coefficient of kinetic friction of 0.220. Package B has a mass of 12.0 kg and a coefficient of kinetic friction of 0.170. How long does it take package A to reach the bottom?

Istap. A constant force F = 5.0 [N] is applied at a certain angle from the horizontal on a 0.50 [kg] block that is initially moving to the right at v; = 3.0 [m/s]. If the block stops after traveling a distance s = 0.80 [m], what is the angle in the figure?? F Vi Vf = 0 0. 34° O 79° 124° 56°