8.7A Bell Ringer

A force of 30 N is applied to a 5 kg object. What is its acceleration?

• 6 m/s²

• 5 m/s²

• 30 m/s²

• 150 m/s²

Tags

NGSS.MS-PS2-2

A box is pushed with 20 N of force and moves at an acceleration of 2 m/s². What is its mass?

• 5 kg

• 10 kg

• 20 kg

• 40 kg

Tags

NGSS.MS-PS2-2

If an object’s mass doubles but the applied force stays the same, what happens to its acceleration?

• It doubles

• It stays the same

• It is cut in half

• It decreases by four times

Tags

NGSS.MS-PS2-2

A soccer ball is kicked with a force of 15 N. If the ball has a mass of 3 kg, what is its acceleration?

• 5 m/s²

• 3 m/s²

• 45 m/s²

• 12 m/s²

Tags

NGSS.MS-PS2-2

A car with a mass of 1,500 kg experiences a force of 3,000 N. What is the car’s acceleration?

• 0.5 m/s²

• 1 m/s²

• 2 m/s²

• 3 m/s²

Tags

NGSS.MS-PS2-2

According to Newton’s Second Law, what happens if you apply twice the force to an object while keeping its mass the same?

• The acceleration stays the same

• The acceleration doubles

• The acceleration is cut in half

• The acceleration decreases slightly

Tags

NGSS.MS-PS2-2

A toy car has a mass of 2 kg and accelerates at 4 m/s². What is the net force acting on it?

• 6 N

• 8 N

• 12 N

• 16 N

Tags

NGSS.MS-PS2-2

A person in an elevator feels heavier when the elevator accelerates upward. Which Newton’s Law explains this?

• Newton’s First Law – An object resists changes in motion.

• Newton’s Second Law – Acceleration depends on force and mass.

• Newton’s Third Law – Forces act in equal and opposite pairs.

• None of the above

Tags

NGSS.MS-PS2-2

A student pushes a shopping cart with a force of 50 N, but friction applies 20 N in the opposite direction. If the cart has a mass of 15 kg, what is its acceleration?

• 2 m/s²

• 3 m/s²

• 5 m/s²

• 10 m/s²

Tags

NGSS.MS-PS2-2

Two students argue about Newton’s Second Law. Student A says only force affects acceleration. Student B says both force and mass affect acceleration. Who is correct and why?

• Student A, because only force matters in motion.

• Student B, because acceleration depends on force and mass.

• Neither, because acceleration is random.

• Both, because Newton’s Laws don’t apply in all cases.

Tags

NGSS.MS-PS2-2