# Homework Help: Second Opinion Please

1. Feb 19, 2008

### phil555

1. The problem statement, all variables and given/known data

Could I please have peoples opinions on the below?

1. A car has a mass of 1000 kg and travels from 0 to 80 km h–1 in 10 s. It
then keeps moving at 80 km h–1.
(a) What is the magnitude of the acceleration in the first 10 s?
(b) How far does it move in the first 10 s?
(c) What force does the engine of the car provide to achieve this
acceleration?
(d) If the two drive wheels of the car are 500 mm in diameter, what is
their rotational speed when the car is travelling at 80 km h–1?

2. Relevant equations

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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2. Feb 19, 2008

### NateTG

This belongs in the introductory physics section.

3. Feb 19, 2008

### phil555

Not the reply I as after LOL. But fair do's.