Newton's 1st & 2nd Laws

Newton's First Law is also known as The Law of

• Friction

• Mass

• Inertia

• Gravity

Which has more Inertia? (so need more force to move) 

• Truck
• Ant
• A cat
• A skateboard

Which type of force(s) will cause a change in an object's motion?

• gravity
• zero net force
• balanced forces
• unbalanced forces

What is defined as a push or pull?

• A movement

• A force

• Speed

• Density

What is Newton's First Law

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction 

Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron? 

• feathers 
• iron
• same
• depends on their friction

What unit do we measure force in?

• Newtons

• Joules

• Force

• Don't know

F=ma

Going down a hill a 12 kg sled has a force of 36 N. What is it's acceleration?

• 2 m/s²

• 3 m/s²

• 432 m/s²

• 0.33 m/s²

F=ma

An object of mass 300 kg is observed to accelerate at the rate of 4 m/s². Calculate the force required to produce this acceleration.

• 75 N

• 12 N

• 1200 N

• 0.013 N

F=ma

A force of 200 N is exerted on an object of mass 40 kg that is located on a sheet of perfectly smooth ice.Calculate the acceleration of the object.

• 5 m/s²

• 800 m/s²

• 80 m/s²

• 1.32 m/s²