GRADE 8-9_WEEK 2 ASSESSMENT

In everyday terms, what is meant by stable?

• Balance

• Equal

• Force

• React

The term ‘remain’ in physics is otherwise known as___.

• Calm

• halt

• Stay

• Stop

People in a car crash are thrown forward because the car stops but the people keep going unless seatbelts save them. What Newton’s law is emphasized on the given scenario?

• Inertia or the Newton’s First Law of motion

•   Inertia or the Newton’s Second Law of motion

• Inertia or the Newton’s Third Law of motionless

• There’s no newton’s law of motion being involved.

 The students are conducting an experiment to test the acceleration of the identical toy car. They used different angles of the ramps by setting at 10⁰, 15⁰ and 20⁰ respectively.  Based on the Newton’s Law of motion, which ramp angle has high acceleration?     

• 0⁰

• 10⁰

• 15⁰

• 20⁰

Why gravity is being described as a pulling force?  

• It attracts things that have mass.

• It shows things that have mass with inertia.

• It is emphasized by Sir Isaac Newton and law of motion.

• It is not described by Sir Isaac Newton and law of motion.

7A ___________ must be exerted on an object at rest to cause it to move.

a. Weight b. Inertia c. force d. gravity

• weight

• inertia

• force

• gravity

A push or pull that causes an object to move, stop, or change direction.

• force

• motion

• energy

• inertia

A push or pull that causes an object to move, stop, or change direction.

• force

• motion

• energy

• inertia

The tendency of an object at rest to stay at rest unless it is acted upon by a force is ______

• inertia

• motion

• gravity

• lubricant

Which force produces a change in motion?

• Unbalanced force

• balanced force

• gravitational force

• frictional force