- #1

- 408

- 1

## Homework Statement

## Homework Equations

## The Attempt at a Solution

5.1) fg// = mgSin(theta)

= 30437.12 N

5.2) Ek = 1/2*m*v^2

= 1/2*(1.2*10^4)*36^2

= 7776000 J

5.3) Wnet = Ek

7776000 = 30437.12*delta x

delta x = 255.48 m

5.4) Decrease

5.5) Make the surface rough to increase friction

5.6) Not too sure about this answer, but anyway,

Fnet = ma

3195.9 = 1260*a

a = -2.54m.s^-2

vf = vi+a*t

0 (At the top of the ramp) = 20 (Is this the initial velocity?, not sure) + (-2.54)*t

t = 7.87 s

P = W/t

65700 (90% efficient) = W/7.87

W = 517059 J

Wnet = Fnet*delta x

517059 = 3195.9*delta x

delta x = 161.79 m

Therefore, No, as the length of the ramp is 255.48m, the car will only make 161.79m