Quiz on Forces and Friction

What materials are needed for the investigation on forces?

• Wax paper, ruler, blocks, and hooks

• Sandpaper, spring scale, blocks, and hooks

• Wax paper, spring scale, blocks, and weights

• Sandpaper, ruler, blocks, and weights

What does a spring scale measure?

• Time in seconds

• Distance in meters

• Force in newtons

• Weight in kilograms

What is the unit of measurement for force used in the experiment?

• Kilograms

• Meters

• Newtons

• Seconds

How much force did the first block exert when lifted with the spring scale?

• Half a newton

• One newton

• Seven tenths of a newton

• One tenth of a newton

What was the force required to pull the block across sandpaper?

• Four tenths of a newton

• Seven tenths of a newton

• One tenth of a newton

• One newton

How does surface roughness affect the force needed to move an object?

• Surface roughness has no effect

• Rough surfaces require more force

• Smooth surfaces require more force

• Rough surfaces require less force

What was the force required to move the block on a smoother surface?

• One tenth of a newton

• One newton

• Four tenths of a newton

• Seven tenths of a newton

What effect did adding vegetable oil have on the force required to move the block?

• Increased the force required

• Made the block heavier

• Decreased the force required

• Had no effect

What is the relationship between friction and force required to move an object?

• Friction does not affect the force needed

• More friction means more force is needed

• Less friction means more force is needed

• More friction means less force is needed

What was the force required to move the block when vegetable oil was applied?

• Seven tenths of a newton

• One tenth of a newton

• No measurable force

• Four tenths of a newton