Unit 2: Week 7 Quizizz Review

What is Newton's 2nd Law?

• Every action has an equal and opposite reaction

• An object at rest stays at rest, an object in motion stays in motion.

• F = ma

• Friction

True or False. Acceleration of an object is directly proportional to the net force acting on it

• True

• False

If the man pushes with an equal amount of force, which object will accelerate more?

• Car because it has more mass

• Lawnmower because it has less mass

• Car because it has less mass

• Lawnmower because it has more mass

A 25 kg bike accelerates at 10 m/s². What was the force?

• 250 N

• 2.5 N

• 25 N

• 15 N

What unit do we measure force in?

• Kilometer/hr

• Joules

• Seconds

• Newtons

What is force?

• A push on an object

• A pull on an object

• A push or pull on an object

If an object was accelerating at 5 m/s², and a force of 10 newtons was required to accelerate it, what was the object's mass?

• 50 kg

• 2 kg

• 0.5 kg

• 5 kg

If you increase the mass on an object, its acceleration

• decreases
• stays the same
• also increases
• stops

A 50-kg crate is pushed with a horizontal acceleration of 20 m/s². What net force is acting on the crate?

• 2.5 N

• 0.4 N

• 1000 N

• 30 N

How can Newton's second law be represented  mathematically? 

• F=MA
• M= F/A
• A= F/M
• All are correct