Newton's Second Law of Motion PREVIEW

Newton's Second Law of Motion PREVIEW

by Mr. Castillo

Science

7th Grade

Multiple Choice

Which object has greater inertia?

Open Ended

If a person hits a softball and a bowling ball with the same force, will they both accelerate at the same rate? Why or why not? Explain your answer.

Open Ended

What net force is needed for a 1600 kg automobile to accelerate at a rate of 2.0 m/s²?

F=ma

Open Ended

A baseball accelerates downward at 9.8 m/s². With negligible air resistance and a net force of 1.4 N, what is the baseball’s mass?

(Hint) F = ma

Open Ended

What force does a car’s engine exert in a car that has a mass of 3,000 kg and is accelerating at 2 m/s² ?

F=ma

Multiple Choice

Newton's Second Law can be expressed as

• v = d / t

• F = ma

• E = mc²

• m₁v₁ = m₂v₂

Multiple Choice

What Unit do we Measure Force in?

• Newtons

• Volts

• Kilograms

• Joules

Multiple Choice

According to __________, the acceleration of an object is equal to the net force acting on the object divided by the object's mass.

• Newton's First Law

• Newton's Third Law

• Inertia

• Newton's Second Law

Multiple Select

According to the formula(f=mxa), and the triangle. What 2 variables are needed to calculate the force?

• Mass

• Acceleration

• Force

Newton's 2nd Law of Motion

• Law of Acceleration

• There is an equation.

• F=MA

• Study the Triangle

Multiple Choice

Using the triangle. What is the formula for force?

• Force = Mass x Acceleration

• $$Accleration=Force\ \div\ Mass$$

• $$Mass=Force\ \div Accleration\$$

Multiple Choice

Using the triangle. What is the formula for Mass?

• Force = Mass x Acceleration

• $$Accleration=Force\ \div\ Mass$$

• $$Mass=Force\ \div Accleration\$$

Multiple Choice

Using the triangle. What is the formula for Acceleration?

• Force = Mass x Acceleration

• $$Accleration=Force\ \div\ Mass$$

• $$Mass=Force\ \div Accleration\$$

Multiple Choice

Newton's second law of motion describes acceleration as force divided by __________.

• speed

• inertia

• mass

• direction

Multiple Choice

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

• 25 Newtons
• 20 Newtons
• 200 Newtons
• 10 Newtons

Multiple Choice

What Unit do we Measure Force in? 

• Newtons
• Joules
• Force
• Don't know

Multiple Choice

What happens when unbalanced forces act on an object at rest?

• the object remains at rest
• the object begins moving in an unpredictable direction
• the object begins moving in the direction of the net force
• the object begins moving opposite to the direction of net force

Multiple Choice

Will it take more force to push an empty shopping cart or a shopping cart that is full?

• The empty shopping cart
• The full shopping cart
• They will take the same amount of force

Multiple Choice

Why would one object have a greater acceleration than another when pushed with the same amount of force?

• The objects have different weights.

• The objects have different forces.

• The objects have different masses.

• The objects are different sizes.

Multiple Choice

A greater applied force is required to move an object with a greater mass than one with a smaller mass.

• True
• False

Multiple Choice

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

Multiple Choice

F=MA
An object of mass 10 kg is accelerated upward at 2 m/s².  What force is required? 

• 20 N
• 2 N
• 5 N
• 0 N

Multiple Choice

Newton's second law of motion describes acceleration as force divided by __________.

• mass
• inertia
• speed
• direction

Multiple Choice

F= mass * acceleration

A 20 kg bike accelerates at 10 m/s². what is the force acting upon it?

• 25 Newtons

• 200 Newtons

• 20 Newtons

• 10 Newtons

Multiple Choice

An object of mass 10 kg is accelerated upward at 2 m/s². What force is required?

• 20 N

• 5 N

• 2 N

• 0 N

Multiple Choice

When force is 20 N, mass is 5 kg, what is acceleration?

F = ma

• 25 m/s²

• 100 m/s²

• 5 m/s²

• 4 m/s²

Multiple Choice

Will it take more force to push an empty shopping cart or a shopping cart that is full?

• The empty shopping cart

• They will take the same amount of force

• The full shopping cart

• Depends on what is in the full shopping cart

Multiple Choice

An object accelerates 8 m/s² when a force of 40 newtons is applied to it. What is the mass of the object?

• 4 kg

• 20 kg

• 0.2 kg

• 5 kg

Poll

Can you calculate force, mass, and acceleration of an object using Newton's 2nd Law of Motion?

• Yes, it's easy for me.

• No, I don't get it at all!

• I kind of understand how to but could use some more practice :)

Multiple Choice

An object with a mass of 5.0 kg has a force of 20.0 newtons applied to it. What is the resulting acceleration of the object?(Remember to divide the force and the mass.)

• 5kg

• 20 N

• 100 m/s2

• 4 m/s2

The Answer is 4 m/s2.

Multiple Choice

An object accelerates 12.0 m/s2 when a force of 6.0 newtons is applied to it. What is the mass of the object?

What is this question asking you to solve for?

• Mass

• Acceleration

• Speed

• Force

Multiple Choice

An object accelerates 12.0 m/s2 when a force of 6.0 newtons is applied to it. What is the mass of the object?

• 2 kg

• 0.5kg

• 6 kg

• 24 kg

The Answer is 0.5 kg.

• undefined

• F = 6N

• A = 12.0 m/s 2 

• Mass = 6N / 12.0m/s2

• Mass = 0.5KG

Multiple Choice

How much force is needed to accelerate a 25kg bowling ball at 2m/s². 

• 50N
• 5N
• 12.5N
• 100N

Multiple Choice

What is the acceleration of a 50 kg object pushed with a force of 500 newtons?

• 100 m/s²
• 25,000 m/s²
• 10 m/s²
• 25 m/s²