what is the surface area of the parachute and final velocity for the person safely land? (Free body diagram + calculation)

You need to cross a river but you don't care where you land on the other side.   Question 2 options:   You will cross faster if you swim into the current so you do not drift.   the fastest way across is to swim at an angle to the current   You cannot change the rate you cross the river by swimming in any direction   the fastest way to cross is to point straight across the river

The two forces F₁ and F₂ shown in the figure (Figure 1) (looking down) act on a 16.0-kg object on a frictionless tabletop. igure 90° F₂ y F₂ 120° (b) 1 of 1 Part A If F₁-12.0 N and F2-21.0 N, find the magnitude of the net force on the object for (a). F = Submit Part B 0 = Find the direction of the net force on the object for (a). Submit Part C 15. ΑΣΦ Request Answer Submit VE ΑΣΦ Request Answer Find the magnitude of the acceleration of the object for (a). 135) ΑΣΦ Request Answer Pearson ? N O from the + axis m/s²

You jump up into the air. Which of the following is propelling you up into the air? Gravity Your force pushing down Your cool tennis shoes O The floor

Consider an object on an incline where friction is present. The angle between the incline and the horizontal is θ and the coefficient of kinetic friction is μk. a.)  Find an algebraic expression for the acceleration of this object. Treat down the incline as the positive direction. b.) Calculate the acceleration, in meters per second squared, of this object if θ = 31° and μk = 0.34. Treat down the incline as the positive direction.

Three mass are arranged as shown. Mass A is 800 kg, Mass B is 400 kg, and Mass C is 600 kg. Draw a free body diagram for each mass. Find the net, vector force on each mass. A 8 m 90° В Mass A Mass B Mass C 12 m

Steps Step 1) Look up the value for the coefficient of kinetic friction between the steel ball and steel track. Step 2) The ball is raised up to a height near the top of the right side of the track. Record this as h2. Step 3) The ball is released with no initial velocity and allowed to roll down the track. Step 4) Determine the velocity of the ball when it reaches the bottom of the track. Step 5) Compare the calculated velocity of the ball at the bottom of the track with the value measured by the motion sensor. Step 6) The height the ball reaches on the opposite side of the track is recorded as h3. Step 7) Complete Tables 1 and 2. Table 1 mBall (kg) 0.05 0 (degrees) h2 (m) h3 (m) 30 0.85 0.75 Table 2 PE, (J) PE2 (J) PE3 (J) Vr1 (m/s) Vn2(m/s) | Vn3 (m/s) N (N) d (m) Wnc (J) Vh1 (meter) = 3.5 m/s Loss of Energy = .

(a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) (b) If the 250-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a). m/s2

Consider a waterslide that has a vertical drop of H1. At the bottom of the slide the person is leaving the slide horizontally, where the end of the slide is h2 above the water. Ignore friction and air resistance to find the distance, L, from the end of the slide a person will land in terms of H1 and h2.

If you drop a rock from a three-story building, with no air resistance, how many forces are acting on the rock and in what direction? O 1, down O 1, up O 2, up O2, down