Physics Quiz

A 20 kg bike accelerates at 10 m/s².  What was the force?

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

Tags

NGSS.MS-PS2-2

How much force is needed to accelerate a 2 kg physics book to an acceleration of 6 m/s/s?

• 36 N

• 12 N

• 3 N

• 0.33 N

Tags

NGSS.MS-PS2-2

An object at rest will remain ​ (a)   and an object in motion will remain ​ (b)   unless an outside force acts on the object.

• at rest

• in motion

• at a constant speed

• in an unbalanced state

A book sits still on a table. What forces act on the book?

• Gravity pulls down and the table pushes up.

• Only gravity pulls down.

• Gravity pulls down, the table pushes up, and friction keeps it still.

• Gravity pulls down and inertia keeps it still.

Answer explanation

Friction only occurs when a force pushes an object across something. If there is no push to the side, friction doesn't affect the book.

Tags

NGSS.MS-PS2-4

Explain your results from our car and ramp lab. How does this demonstrate one of Newton's Laws? (must include which law and be in complete sentencecs to receive full credit)

Tags

NGSS.MS-PS2-2

A change in velocity over time is called ___________.

• speed

• force

• acceleration

• direction

Tags

NGSS.MS-PS2-2

What is the definition of acceleration?

• The overall rate at which an object moves

• The rate at which velocity changes

• Any push or pull

• Force that resists movement between two surfaces

Tags

NGSS.MS-PS2-2

What is force defined as?

• The energy an object has because of position or size

• Any push or pull

• The rate at which velocity changes

• A mass hung by a fixed point that can swing freely

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What is gravity described as?

• The energy an object has because of position or size

• Speed with a direction

• Force of attraction between 2 objects

• Any push or pull

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What is the principle of inertia as stated by Newton's 1st law?

• For every action there is an equal and opposite reaction

• The acceleration of an object is dependent upon two variables - the force acting upon the object and the mass of the object

• Resistance to change

• A mass hung by a fixed point that can swing freely