Brad uses a wheelchair to get in his house.which modification would make it easier for Brad to get in his house?
a)increase the length of the ramp
b)increase the friction between the wheels and the ramp surface
Is the ramp made of ice? What do you think? Why?
The modification that would make it easier for Brad to get in his house would be to increase the length of the ramp (option a).
Explanation: A wheelchair ramp is designed to provide a gradual incline for wheelchair users to navigate, allowing them to easily access buildings. By increasing the length of the ramp, the incline becomes less steep, making it easier for Brad to navigate up the ramp in his wheelchair. A longer ramp will provide a more gradual slope, reducing the effort required to overcome the incline.
On the other hand, increasing the friction between the wheels and the ramp surface (option b) may not necessarily make it easier for Brad to get in his house. Friction primarily affects the ability of the wheels to grip and move on a surface, but it does not address the issue of the steepness of the incline. While friction can play a role in providing stability and preventing wheel slippage, it is the gradient or slope of the ramp itself that determines the level of accessibility for wheelchair users.