Newton's Second Law

Read the article, on Newton's 2^nd then answer the following questions

Multiple Choice

What is acceleration?

• the rate of change in an object’s velocity

• the measure of an object’s speed and direction.

• the measure of an object’s speed

• n is the rate of change in an object’s velocity

Multiple Choice

Which formula associated with Newton’s 2nd Law?

• F = ma

• m = F/a

• a = F/m

• m = a/F

Multiple Choice

What is gravity

• The earth's downward pull

• The earth's upward pull

• A push or Pull

• force that casues motion to stop

Multiple Choice

Why did the soccer ball accelerate faster in the second scenario?

• The force was increased.

• The mass was increased.

• The force was decreased.

• Both force and mass were increased.

Multiple Choice

What is Force

• The earth's downward pull

• The earth's upward pull

• A push or Pull that causes an object to change speed or direction

• A force that causes motion to stop

Multiple Choice

Calculate the force acting on a 15 kg sled that accelerates at 5m/s²?

• 45 N

• 3 N

• 75N

• 30N

Multiple Choice

What is Velocity

• the measure of an object’s direction.

• the measure of an object’s acceleration

• the measure of an object’s speed and direction.

• The measure of an object’s speed

• Visit the site on the next page

• Click play to watch the video

• Then answer the following questions

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The rate at which an object changes speed is called

Multiple Choice

What can be measured by acceleration?

• How much an object slows down

• How much an object speeds up

• If an object changes direction

• All of the above

Multiple Choice

Your neighbor is riding her bike around the block. When she slows down and turns a corner, what changes about her?

• Her velocity

• Her speed only

• Her Friction

• Her Balance

Multiple Choice

For this question, refer to the image to the left...

The larger the ___________ of an object, the greater the ____________ needed to change the direction or the speed.

• mass / tow truck

• mass / force

• suitcases / force

• windows / force

Multiple Choice

Why is it harder to push a van filled with bowling balls than it is to push a van with basketballs?

• The mass of the car is greater than the mass of the basketballs

• The van with the basketballs is bigger than the van with the bowling balls

• The mass of the bowling balls is greater than the mass of the basketballs

• It should be equally as hard to push the two vans

Newton's Second Law calculations

Multiple Choice

Using the triangle. What is the formula for force?

• Force = Mass x Acceleration

• Mass=Force ÷ Acceleration 

• Accleration=Force ÷ Mass

Multiple Choice

Using the triangle, what is the formula for acceleration?

• Force = Mass x Acceleration

• Mass=Force ÷ Acceleration 

• Accleration=Force ÷ Mass

Multiple Choice

Using the triangle, what is the formula for mass?

• Force = Mass x Acceleration

• Mass=Force ÷ Acceleration 

• Accleration=Force ÷ Mass

Multiple Choice

An object with a mass of 2.0 kg accelerates 2.0 m/s2 when an unknown force is applied to it. What is the amount of force?

This question asks you to calculate which variable.

• Force

• mass

• acceleration

Multiple Select

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

• Mass

• Acceleration

• Force

Multiple Choice

An object with a mass of 2.0 kg accelerates 2.0 m/s² when an unknown force is applied to it. What is the amount of force?

• 4N

• 2kg

• 20N

• 2.0m/s²

Multiple Choice

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

• 10m/s²

• 250kg

• 25kg

• 250N

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?

What is this question asking you to solve?

• Force

• Mass

• Acceleration

Multiple Select

According to the formula(f=mxa), and the triangle. What 2 variables are needed to calculate the acceleration? Select all that applies

• Mass

• Acceleration

• Force

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?

• 5kg

• 20N

• 4m/s²

• 4N

Multiple Choice

If a 2kg bird is pushed by the wind with a force of 2N, how fast does the bird accelerate?

• 2kg

• 2N

• 1m/s²

• 4kg

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

• Force

• Acceleration

Multiple Select

According to the formula(f=mxa), and the triangle. What 2 variables are needed to calculate the mass? Select all that applies

• Mass

• Force

• Acceleration

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?

• 0.5kg

• 2kg

• 12kg

• 6kg

Your turn to practice what you have learned

Multiple Choice

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?

• 50kg

• 0.5kg

• 2kg

• 5kg

Multiple Choice

You give a shopping cart a shove down the isle. The cart is full of groceries and has a mass of 18 kg. The cart accelerates at a rate of 3 m/s². How much force did you exert on the cart?

• 6N

• 21N

• 54N

• 18N

Multiple Choice

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

• 100 m/s²

• 10 m/s²

• 25,000 m/s²

• 25m/s²

Multiple Choice

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

• 50N

• 12.5N

• 5N

• 100N

Multiple Choice

A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec².  What is the mass of the object?

• 50kg

• 1250kg

• 5kg

• 100kg

Multiple Choice

The classes are playing tug of war. Barsoum’s room pulls to the left with a force of 45 N. Coach Camacho's room pulls to the right with a force of 50 N. What is the net force? And who won?

• 5N right. Coach Comacho's Class won

• 95N and Coach Comacho's class won. 

• 5N Left. Barson's class won

• 95N and Barson's class won.