Question

Asked Dec 18, 2019

3 views

An 80.0 - kg skydiver jumps out of a balloon at an altitude of

1.00 x 10^{3} m and opens the parachute at an altitude of 200.0 m.

(a) Assuming that the total retarding force on the diver is

constant at 50.0 N with the parachute closed and constant at

3.60 x 10^{3} N with the parachute open, what is the speed of

the diver when he lands on the ground? (b) Do you think the

skydiver will get hurt? Explain. (c) At what height should the

parachute be opened so that the final speed of the skydiver

when he hits the ground is 5.00 m/s? (d) How realistic is the

assumption that the total retarding force is constant? Explain.

Step 1

(a). according to the work energy theorem in the entire trip

Step 2

Since the retarding force is opposite to the motion of the diver and the final potential energy and initial kinetic energy of the diver is zero. Because the diver is starting from rest and the final position is to the ground.

Step 3

Solve the above equation...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: For each of the situations given, state whether frictional forcesdo positive, negative, or zero work...

A: (a) The work done by the friction force is negative since the displacement of the plate and the fri...

Q: Antlion larvae lie in wait for prey at the bottom of aconical pit about 5.0 cm deep and 3.8 cm in ra...

A: The x component of the displacement of the sand grain is

Q: 37.00 (a) Find the tension in each cable supporting the 6.00 × 10²-N cat burglar in Figure P4.35. (b...

A: Figure.1 shows the free body diagram for the given situation.

Q: A 3.00-kg block starts from rest at the top of a 30.0° inclineand slides 2.00 m down the incline in ...

A: part A:

Q: A 50.0 - kg projectile is fired at an angle of 30.0° above the horizontalwith an initial speed of 1....

A: (a) Write the expression for initial mechanical energy

Q: Two point charges Q1 = +5.00 nC and Q, = -3.00 nC are separated by 35.0 cm. (a) What is the electric...

A: Part A:

Q: A student sets up a double - slit experiment using monochromatic light of wavelength l. The distance...

A: Given,

Q: State Newton's third law of motion?

A: Click to see the answer

Q: And FM radio station broadcast at 96.6 MHz. Find the wavelength in meters of this radio wave. Radio ...

A: Given:Frequency = 96.6 MHzSpeed of light in vacuum = 3 X 108 m/s