A 75 kg skydiver can be modeled as a rectangular "box" with dimensions 24 cm × 41 cm × 170 cm . If he falls feet first, his drag coefficient is 0.80.
Part A What is his terminal speed if he falls feet first? Use ρ = 1.2 kg/m3 for the density of air at room temperature. Express your answer with the appropriate units.
We know that Drag force is
D = 1/2*density*v2*C*A
Where C is the Drag coeffecient
W = m*g
At terminal speed, Fnet = 0,
D - W = 0,
D = W
So, solving for V
mg=0.5d*v2*C*A
v=(2mg/CAd)0.5
A is the cross sectional area going into the wind
S = .24 m * .41 m
C = 0.80
So,
v=(2*75*9.81/0.8*0.24*0.41*1.2)0.5
v=124.81 m/s
A 75 kg skydiver can be modeled as a rectangular "box" with dimensions 24 cm ×...
Problem 18 Part A A 86 kg skydiver can be modeled as a rectangular "box" with dimensions 20 cm × 38 cm × 1.8 m What is his terminal speed if he falls feet first? Express your answer using two significant figures Kerm = m/s Submit My Answers Give Up Incorrect; Try Again; 13 attempts remaining
A 72kg skydiver can be modeled as a rectangular "box" with dimensions 18cm
A 6.5-cm-diameter ball has a terminal speed of 26 m/s. What is the ball’s mass? Use ρ = 1.2 kg/m3 for the density of air at room temperature.
#4 and #5!! 4. A 55 kg box rests on a horizontal surfcion betwce the box and the surface is 0.30, and the coefficient of kinetic friction is 0.20. What horizontal force must be applied to the box to cause it to start sliding along the surface? 4 :0 ovit 5. A projectile is launched at ground level with an initial speed of 50.0 m/s at an angle of 300 above the horizontal. It strikes a target above the ground...
A 90-kg (including any equipment) skydiver drops out of a plane. Using an air density of 1.0 kg/m3, a frontal surface area of 1.0 m2, and a drag coefficient of 0.8, what will the skydiver's terminal velocity be? A. Less than 50 m/s B. Between 50 and 100 m/s C. Between 100 and 150 m/s D. More than 150 m/s v= square root -2 (90) (-9.81)sin90/.8(1.0)(1.0)
A 22 cm diameter bowling ball has a terminal speed of 75 m/s. Suppose that the density of air is 1.2 kg/m3. PART A: What is the ball's mass?
18. Jonah throws a rock off the Empire State Building, and it quickly reaches terminal velocity. Find the terminal velocity of the rock as it falls vertically, given the following information: drag coefficient = 0.75; air density = 1.2 kg/m3; cross-sectional area of the rock = 5e-5 m²; mass of the rock = 27 g. A B C 207 m/s 75 m/s 108 m/s 94 m/s 138 m/s E
(7%) Problem 4: A 66 kg and a 82 kg skydiver jump from an airplane at an altitude of 6000 m, both falling in the diving/headfirst position. Assume their surface area is 0.105 m and the drag coefficient is 0.70 Randomized Variables ,-66 kg m 82kg A-0105 m 50% Part (a) How long will it take for the first dner to reach the pound in seconds assuming the time to reach term na raloct Grade Summary Potential95 Submissio s man...
A 11-2 A rock with a diameter of 20 cm is dropped from a very high cliff. Using the 01pts drag-force equation F-(0.25) density of airXcross-sectional area)v2, estimate the time it will take for the rock to reach terminal velocity. The density of air is about 1.2 kg/m3. Submission History Incorrect. Your answer: "5 min". Score: 0/0.1 You may resubmit below: OA. 30s 5 min C. 30 min OD. 2 hours ов. 11-3 A wrench of mass 1.5 kg is...
A driver of a box van is going too fast on a wet slippery bridge and accidentally drives off it and lands in the river below (density of river water = 1000 kg/m3 ). When the van first lands in the water it floats with a submergence depth of h (m) (See sketch of van on left in Fig 1a). The van can be represented in an idealized form of a rectangular cube submerged by the depth h (m)...