A parachutist whose mass is 60 kg drops from a helicopter hovering 1000 m above the ground and falls toward the ground under the influence of gravity. Assume that the force due to air resistance is proportional to the velocity of the parachutist, with the proportionality constant b₁ = 20 N-sec/m when the chute i s closed and b₂ = 90 N-sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 25 m/sec, after how many seconds will the parachutist reach the ground? Assume that the acceleration due to gravity is 9.81 m/sec².

Q: A flywheel has a radius of 16.0 cm. What is the speed of a point on the edge of the flywheel, in…

A: Given Data:The radius of the flywheel is Centripetal acceleration is Centripetal acceleration is…

Q: 100 100 200 30 300 40 200 300 300 400 500 € 50% 40 (Object placed in 50 ml of water) 50 40 (Object…

A:

Q: Water has a density of 1.00 Mg/m3. What is the density expressed in imperial units? Express your…

A: To convert the density of water from metric units (Mg/m^3) to imperial units (slugs/ft^3), you can…

Q: How much work does it take to slide a crate 27 m along a loading dock by pulling on it with a 250-N…

A:

Q: The figure shows two parallel nonconducting rings with their central axes along a common line. Ring…

A:

Q: The radius of the earth's orbit around the sun (assumed to be circular) is 1.50×108km, and the earth…

A: Orbital radius of the Earth is Time period of the Earth orbiting the Sun is Orbital radius of…

Q: 7) A graduated cylinder filled with water is shown to the right. a) Measure the volume of water to…

A:

Q: A sample of an ideal gas is heated and its Kelvin temperature doubles. What happens to the average…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Two waves traveling together along the same line are given by Y₁ = a sin(wt - kx) Y₂ = a sin(wt +…

A:

Q: and 3 Suppose that in a lightning flash the potential difference be- tween a cloud and the ground is…

A: Question (3):The potential difference is Charge is Mass of vehicle is Initially the vehicle is at…

Q: Calculate the magnitude of the magnetic field inside the solenoid shown below. I 5 cm 00000000 3A

A:

Q: If 39% of the body weight is distributed above the superior surface of the L5 intervertebral disc…

A: Given:Body weight Force distributed above the superior surface of the disc Area of the superior…

Q: Songlu loves Vin Diesel and has watched every Fast and Furious movie, even Tokyo Drift! To get Vin…

A:

Q: In U.S. football, after a touchdown the team has the opportunity to earn one more point by kicking…

A:

Q: 2. The height of a tidal wave approaching a cliff is represented by the equation h(t) = 5.3 cos[27t…

A:

Q: how did you convert from 87.03 North West to 94.7 North East

A: To convert from a direction given as "87.03 North West" to "94.7 North East," you need to understand…

Q: A 5.7-kg rock and a 4.6 x 10-4-kg pebble are held near the surface of the earth. (a) Determine the…

A: Mr = 5.7 kgMp = 4.6 x 10-4 kgMr - mass of the rockMp - mass of the pebble

Q: What is the amplitude of the vertical motion of a segment of the string located at x = 4.000 cm the…

A: As per the students request, we need to solve part g.

Q: A tank has the shape of an inverted circular cone with height 11 m and base radius 8 m. The tank is…

A:

Q: Sound (speed = 343 m/s) exits a diffraction horn loudspeaker through a rectangular opening like a…

A:

Q: Suppose that the separation between two speakers A and B is 4.90 m and the speakers are vibrating…

A:

Q: cat drops from a shelf 4.0 ft above the floor and lands on all four feet. His legs bring him to a…

A:

Q: 9. A group of students investigated the motion of a puck on an air table. The puck was tethered t…

A: From the given data, it is clear that, if the average spring length is small, then the distance…

Q: A pilot is flying a plane at 220 m/s and an altitude of 500 meters. If she needs to deliver supplies…

A:

Q: Determine the unit vector UA/O in the direction of ra/o. Answer: UA/O = (i i+ i j+ i k)

A:

Q: direction of the kick starts running to meet the ball at that instant. What must be his average…

A: Given,    The initial speed of the soccer ball,                              The angle from the…

Q: Determine the length of a tube closed at one end that will produce a fundamental frequency of 525 Hz…

A: Frequency, f = 525 HzSpeed, v = 330 m/s

Q: You measure the oscillation period of a flexible rod to be T= 9.20 ± 0.5 ms.  The so-called angular…

A:

Q: During an action potential, Na+ ions move into the cell at a rate of about 3 × 10-7 mol/m² .s. Part…

A:

Q: need help on b and c.

A: The data provided according to the question is

Q: An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a…

A: Initial speed (u) = 13 m/sFinal speed (V) = 9.7 m/sTime (t) = 3.20 sWe need to find(a) What is the…

Q: Three forces are applied to an object, as shown in the figure. Force ->F1 has a magnitude of 24.4…

A: Forces are given as and it makes an angle  with +y-axis in anticlockwise direction. along the…

Q: Briefly explain the differences between Rayleigh, Tyndall and Raman light scattering.

A: Rayleigh, Tyndall, and Raman scattering are three different phenomena related to the scattering of…

Q: b) A conductor of uniform radius 1.2 cm carries a current of 3A due to potential gradient of 120…

A: The current density of a conductor is known as the current flowing through the conductor per unit…

Q: J's car is 0.50 mile behind A’s car while J is moving at 70 mile/hour and A is 60 mile/hour. If J…

A: This problem can be solved using fundamental equations of motion

Q: A drum rotates around its central axis at an angular velocity of 12.1 rad/s. If the drum then slows…

A:

Q: A ball is thrown upward at a speed vo at an angle of 52.0° above the horizontal. It reaches a…

A:

Q: You throw a ball straight up with an initial velocity of 14.6 m/s. It passes a tree branch on the…

A: Note: The upward direction is considered as positive and downward direction as negative

Q: A compression spring has a spring constant of 30 kN/m. Initially the spring is compressed 1 cm…

A: Spring constant, k = 30 kN/m=> k = 30*103 N/mInitial distance of compression, xi = 1 cm=> xi =…

Q: ou have an object 16.0 cm away from a diverging lens of focal length f = –16.0 cm. From this…

A:

Q: The equation for the best-fit line for the velocity vs. time graph for a particle is v=5.1t+7.9,…

A: V = 5.1t +7.9We need to determine acceleration.

Q: 2. On his 10th birthday, Rendon's parents treated him with a carousel ride. If he is seating 350 cm…

A:

Q: A hockey player uses her stick to exert a force of 2.00 N on a stationary puck, which is resting on…

A:

Q: V₂: V₁ = 4:1 V₁ V₂ 6 molecules of a gas in V₂ and hole is made in partition. Now a There are none in…

A:

Q: The circuit to the right consists of a battery (Vo = 1.50 V) and five resistors (R₁ = 511 92, R₂ =…

A:

Q: 0 5 +q 10 x (cm) -2q +q Point charges are located at 3.00, 8.00, and 11.0 cm along the x-axis. What…

A:

Q: (2) To study damage to aircraft that collide with large birds, you design a test gun that…

A:

Q: BO tº ⁰a TB g 10 1²

A:

Q: Express F as a vector in terms of the unit vectors i, j, and k. Determine the projection, both as a…

A:

Q: Two crickets, Chirpy and Milada, jump from the top of a vertical cliff. Chirpy just drops and…

A: Initial horizontal speed of Milada  =  95.0 cm/sTime taken to reach ground =3.50 sAnd Both will…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: