- #1

Gixer1127

- 28

- 12

This is my first post so please be gentle with me..

I'm trying to work my way through some tricky questions so will post them below and see if anyone can give me some pointers.

The questions are:

A car weighs 1305kgs and accelerates from 0 to 160km/h in 4.2s. The first question asked what the average acceleration would be. I converted the terminal speed to m/s which came out at 44.44m/s.

Then I did a calculation for the average acceleration as shown

ā = (44.44m/s – 0m/s) / 4.2s = 10.58m/s²

Is this correct?

Next question:

**The tractive force produced by the car to provide this acceleration. Note you must also consider the additional 1000N resistive force.**

This is where I am totaly stuck and any help in pointing me in the right direction would be most appreciated.

Cheers,

Gixer1127