Cars have many great examples of Newton's Laws and forces for us to examine. The force produced by the car's engine is transferred to its wheels (usually the front 2) which spin against the ground.

Part 1: Driving

1. Draw a diagram showing how a car's wheels spinning can cause a car to accelerate forward. Which of Newton's Law(s) are at play here? Explain. [4 Marks]

1. While a car is traveling normally (wheels not skidding), which type of force (gravity, static friction, normal, etc.) is responsible for pushing the car forward? Explain. [2 Marks]

1. Consider a 900 kg car. Draw a FBD for the car accelerating from rest. [2 Marks]

1. Calculate the weight of the car and the normal force of the car. [2 Marks]

1. The car's tires are made of rubber and the road is asphalt. The coefficients of friction for this case are: _s=0.95 and _k=0.92 Determine the maximum possible driving force of the car. (HINT: What kind of friction is important here?) [3 Marks]

Part 2: ABS: Anti-Lock Brakes System

1. Anti-Lock Brakes are a safety feature now available on most cars. They work by not letting the wheels "lock-up" while braking (stop spinning entirely and skid). Give 2 reasons why this would be a safety feature. Hint: Think steering and friction. [2 marks]