Fourth PT in Science 8

Which force would cause an object to fall?

• net force

• gravitational force

A boy and a girl are pulling a heavy box at the same time with 5 units of force each. What is the net force acting on the object?

• 5 units

• 10 units

If the sum of the forces equates to zero, they are considered as

• unbalanced

• balanced

The forces would cause a change in a body’s state of motion.

• balanced

• unbalanced

It refers to the size or strength of the force.

• direction

• magnitude

An object will remain at rest when the forces acting on it are

• equal in magnitude and in opposite direction

• equal in magnitude and the same direction

It is a force that acts between surfaces that are in contact with one another.

• friction

• normal force

It is referred to as the push or pull.

• motion

• force

DIFFICULT: A bus starts from rest and accelerates to 14 m/s in 4000 milliseconds. What is the average acceleration of the bus?

• 3.5 m/s²

• 35 m/s²

The biomolecule that holds an organism's genetic information is called ___________.

• carbohydrate

• nucleic acid