Level 7 Physics Pre-Test

Which of the following is an example of a lever?

• A ramp

• A seesaw

• A screw

• A wheelbarrow

What type of simple machine is a screw?

• Lever

• Inclined plane

• Pulley

• Wedge

Which simple machine consists of a wheel with a rope or chain wrapped around it?

• Pulley

• Wedge

• Lever

• Screw

In a force diagram, what does the length of the arrow represent?

• The direction of the force

• The magnitude of the force

• The type of force

• The mass of the object

If an object is at rest and the forces acting on it are balanced, what will happen to the object?

• It will start moving

• It will remain at rest

• It will accelerate

• It will change direction

Which of the following is an example of an unbalanced force?

• A book lying on a table

• A car accelerating

• A hanging picture

• A stationary bicycle

What is the unit of force in the metric system?

• Kilogram

• Newton

• Metre

• Joule

How does increasing the mass of an object affect its motion when a constant force is applied?

• It will accelerate more

• It will accelerate less

• It will not affect the acceleration

• It will change direction

Which simple machine is used to split objects apart?

• Lever

• Pulley

• Wedge

• Wheel and axle

• 9.8 N

• 98 N

• 100 N

• 10 N