(40%) Problem 1: A bicycle initially at rest accelerates for t 14 seconds at a r

Question

(40%) Problem 1: A bicycle initially at rest accelerates for t 14 seconds at a rate of a 1.4 m/s Otheexpertt 33% Part (a) Calculate the distance, in meters, that the bicycle traveled during that period. Grade Summa d- Deductions Potential cotan) asin acos 4 5 6 1 2 3 Submissions Attempts remaina (1% per attempt) acotanOsinhO Degrees O Radians SubemitHint coshO tanhOcotanh0 Feedback: t deduction per feedback 33% Part (b) Enter an expression, in terms of defined quantities, for the final velocity of the bicycle after tune F4 33% Part (c) Calculate the final speed, in meters per second lip

Explanation / Answer

a] Initially, u = 0 m/s

t = 14s

a = 1.4 m/s2

use S = ut + (1/2)at2

S = 0 + (1/2)(1.4)(14)2 = 137.2 m

this is the distance traveled in the given time.

b] v = u + at

here, u = 0 m/s and a = 1.4 m/s2

therefore, the expression for final velocity after time t is:

v = 0 + 1.4t = 1.4t

c] v = 1.4(14) = 19.6 m/s.

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