- #1

alexandria

- 169

- 2

## Homework Statement

## Homework Equations

relevant equations are provided with each question below

## The Attempt at a Solution

please check my solutions to ensure they are correct. thanks.

a) [/B]

b)

Calculate net force:

Fnet = FA + Ff + Fg

Fnet = (1.20 x 104 N [up]) + (1.40 x 103 N [down]) + (10094 N [down])

Fnet = (1.20 x 104 N [up]) – (1.40 x 103 N [up] + 10094 N [up])

Fnet = 506 N [up]

Calculate net acceleration:

Fnet = m a

a.net = Fnet /m

= 506 N [up] / 1030 kg

= 0.49 m/s2 [up]

c)

Relevant Equation to solve for the force normal:

FN = mg + ma

FN = (35 kg) (9.8 N.kg [down]) + (35 kg) (0.49 m/s2 [up])

FN = 360.15 N [up]

The force normal acting on this passenger is approximately 360 N [up].

e)

Given information:

v1 = 0

a = 0.49 m/s2 [up]

t = 12.0 s

Unknown:

v2 =?

Equation:

v2 = v1 + a x total time

= 0 + (0.49 m/s2) x (12.0 s)

= 5.88 m/s [up]

The velocity is approximately 5.9 m/s [up]