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Mr. Bank was skydiving... not really, and reached a speed of 54m/s while falling to the Earth. He then pulled the parachute chord and slowed down to a speed of 18m/s while still falling down to the Earth. Answer the following questions given this information. Show all work to receive full credit. A) Draw a Free-Body Diagram for when the skydiver first pulls the parachute chord to slow down. Hint: He is still moving down towards the Earth but is slowing down. B) Using one of the Big 3 Kinematic equations, calculate the acceleration of the skydiver when slowing down if it happens in a time of 0.8 seconds. C) Calculate the weight of the skydiver if their mass is 85kg. D) Applying Newton's 2nd Law, determine the Force of Tension from the parachute while they are slowing down.

          Mr. Bank was skydiving... not really, and reached a speed of 54m/s while falling to the Earth. He then pulled the parachute chord and slowed down to a speed of 18m/s while still falling down to the Earth. Answer the following questions given this information. Show all work to receive full credit.
A) Draw a Free-Body Diagram for when the skydiver first pulls the parachute chord to slow down. Hint: He is still moving down towards the Earth but is slowing down.
B) Using one of the Big 3 Kinematic equations, calculate the acceleration of the skydiver when slowing down if it happens in a time of 0.8 seconds.
C) Calculate the weight of the skydiver if their mass is 85kg.
D) Applying Newton's 2nd Law, determine the Force of Tension from the parachute while they are slowing down.

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Mr. Bank was skydiving... not really, and reached a speed of 54m/s while falling to the Earth. He then pulled the parachute chord and slowed down to a speed of 18m/s while still falling down to the Earth. Answer the following questions given this information. Show all work to receive full credit.
A) Draw a Free-Body Diagram for when the skydiver first pulls the parachute chord to slow down. Hint: He is still moving down towards the Earth but is slowing down.
B) Using one of the Big 3 Kinematic equations, calculate the acceleration of the skydiver when slowing down if it happens in a time of 0.8 seconds.
C) Calculate the weight of the skydiver if their mass is 85kg.
D) Applying Newton's 2nd Law, determine the Force of Tension from the parachute while they are slowing down.

Added by Danielle A.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Christian Dell

04/28/2022

Step 1

Given: Initial velocity (u) = 54 m/s Final velocity (v) = 18 m/s Time (t) = 0.8 seconds Using the kinematic equation: \[ a = \frac{v - u}{t} \] Substitute the values: \[ a = \frac{18 - 54}{0.8} \] \[ a = \frac{-36}{0.8} \] \[ a = -45 \, m/s^2 \] Therefore, the Show more…

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Mr. Bank was skydiving... not really, and reached a speed of 54m/s while falling to the Earth. He then pulled the parachute chord and slowed down to a speed of 18m/s while still falling down to the Earth. Answer the following questions given this information. Show all work to receive full credit. A) Draw a Free-Body Diagram for when the skydiver first pulls the parachute chord to slow down. Hint: He is still moving down towards the Earth but is slowing down. B) Using one of the Big 3 Kinematic equations, calculate the acceleration of the skydiver when slowing down if it happens in a time of 0.8 seconds. C) Calculate the weight of the skydiver if their mass is 85kg. D) Applying Newton's 2nd Law, determine the Force of Tension from the parachute while they are slowing down.

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Transcript

00:01 Okay, so here we have a question of a mr.

00:03 Bank who is skydiving, but not really, and reaches a speed of 54 metres second whilst falling to earth.

00:11 We then give him various information about his speed, so he pulls a parachute, slows down, and then falls at a steady speed down to earth, and we're asked first off, so a is draw a free body diagram when the skydiver first pulls the parachute in order to slow down.

00:30 The lovely thing about physics is that we can model objects as, well, spheres or just point masses, which is good because my art skills are terrible.

00:45 And we can draw the upwards force of drag because he's going to be slowing down and be careful here.

00:54 So his weight needs to be smaller than the upwards force of drag.

00:59 So weight downwards must be smaller than drag upwards because otherwise the skydiver would not be slowing down.

01:07 And this would represent, even though he's moving downwards, but he's going to be slowing down because he has a greater force upwards than downwards.

01:17 Next up, we are asked for b to calculate the acceleration or even the deceleration of the of the skydiver.

01:27 It's termed as acceleration.

01:28 So it's going to come out as a negative number.

01:31 So i'm going to be here.

01:33 So in order to do this, we're going to use a suvat equation.

01:38 Now, there are other ways to do this.

01:39 I quite like using suvat equations, and this is just the way that i write it.

01:44 So s is the displacement.

01:46 We don't need to know that here...

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