In this question i and j are the unit vectors due east and due north respectively, and
Question:
In this question i and j are the unit vectors due east and due north respectively, and k is the unit vector acting vertically upwards. A BASE jumper descending with a parachute is modeled as a particle of mass 50 kg subject to forces describing the wind, W, and air resistance, F, where:
W = (20i + 16j) N
F = (−4i − 3j + 450k) N
a. With reference to the model, suggest a reason why the k component of F is greater than the other components.
b. Taking g = 9.8 m s−2, find the resultant force acting on the BASE jumper.
c. Given that the BASE jumper starts from rest and travels a distance of 180 m before landing, find the total time of the descent.
Step by Step Answer:
Pearson Edexcel A Level Mathematics Pure Mathematics Year 2
ISBN: 9781292183404
1st Edition
Authors: Greg Attwood, Jack Barraclough, Ian Bettison, David Goldberg, Alistair Macpherson, Joe Petran