SFB U15 LESSON 4 PAGES 727-731

Multiple Choice

Which is the first law?

• Law of gravity

• Law of inertia

• Law of newton

Multiple Choice

I move a chair, the chair stops moving if I stop moving it

• First law

• Second law

• Third law

• Choclos

Multiple Choice

it is what makes the speed of an object change, making it faster or slower

• rest

• speed

• acceleration

• sound

Multiple Choice

What Unit do we Measure Force in? 

• Newtons
• Joules
• Force
• Don't know

Multiple Select

How can Newton's second law be represented mathematically? Choose various

• Force Formula

  F=MxA

• Mass Formula

  M= F➗A

• Acceleration Formula

  A= F➗M

Multiple Select

Newton's 2nd Law shows the relationship between the following 3 factors:

• Force

• Displacement

• Acceleration

• Newtons

• Mass

Math Response

A 20 kg frog leaps with an acceleration of

2 m/Second square

what is its force?

Type answer here

Correct Answer: 40

Deg^°

Rad

Multiple Choice

In order to find the FORCE of an object you would use the following calculation:

• Mass x Newtons

• Mass x acceleration

• Force/mass

• Mass/Acceleration

Multiple Choice

To find the MASS of an object you would use the following calculation:

• Mass ✖ Newtons

• Mass ✖ acceleration

• Force➗mass

• Mass➗Acceleration

Multiple Choice

In order to find the ACCELERATION of an object you would use the following calculation:

• Mass ✖ Newtons

• Mass ✖ acceleration

• Force➗mass

• Mass➗Acceleration

Multiple Choice

How much force is needed to accelerate a 3kg skateboard at 5m/s^2. 

• 8N
• 1.6N
• 0.6N
• 15N

Multiple Choice

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

• 50N
• 5N
• 12.5N
• 100N

Multiple Choice

As the car crashes into the pole, the driver with a mass of 160 g was thrown from the car with a force of 800 N

What was the acceleration of his body as it was thrown from the car?

• 800 m/s2

• 128,000 m/s2

• 640 m/s2

• 5 m/s2

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​​Look carefully at the diagrams of the apple and the table.

Draw arrows to show the forces between apple and table. Make longer lines to show stronger forces.​

Draw

Draw arrows to show the forces between apple and table.

This image shows an apple and a table exerting equal and opposite forces on each other.

Draw

Draw arrows to show the forces between apple and table.
Make longer lines to show stronger forces.​

​This image shows the apple in motion.
The force applied by the table is greater than the force applied by the apple.

Draw

Draw arrows to show the forces between apple and table.
Make longer lines to show stronger forces.​

​This image shows the apple as its motion is changed by the table. Here the force applied by the apple is greater than the force applied by the table.

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Multiple Choice

Why do you think the force of gravity is less in orbit than it is here on Earth?

• The force of gravity is less in orbit because objects are closer to the sun
• The force of gravity is less in orbit because objects are made of lighter materials
• The force of Earth’s gravity becomes less as you move away from Earth

• The force of gravity is less in orbit because objects are shielded from gravity by the atmosphere

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Multiple Choice

Explain what two forces are acting on Isaac Newton as he floats in the ISS. ​

• Gravity and inertia

• Tension and friction

• Magnetic force and friction
• Inertia and air resistance