What kinds of things do you use that have wheels?

Some things that have wheels include cars, bicycles, skateboards, scooters, wheelchairs, strollers, shopping carts, luggage, rollerblades, tricycles, and roller skates.

What kinds of things are difficult to pull?

Some things that are difficult to pull include heavy objects like furniture, loaded carts or wagons, large vehicles that are stuck, and sleds or toboggans on rough terrain. Additionally, pulling things uphill or through thick or uneven terrain can also be challenging.

What is one benefit of using simple machines?

One benefit of using simple machines is that they can make tasks easier by multiplying or redirecting force, allowing us to perform work more efficiently. Simple machines also help us to save time and energy in completing various tasks. Additionally, they can help us overcome physical limitations and accomplish tasks that would be difficult or impossible to do without their assistance.