Force and Motion Review

It takes more force to accelerate an elephant than a hawk because a hawk has less mass.  This is an example of 

• Newton's 1st law, the law of inertia
• Newton's second law, the law of acceleration
• Newton's third law, the law of action reaction
• The law of universal gravitation

Tags

NGSS.HS-PS2-1

When a falling Barbie hits the ground, the ground hits the Barbie and the Barbie accelerates more than the ground since the Barbie has less mass than the ground.  This is an example of 

• Newton's first law, the law of inertia
• Newton's second law, the law of acceleration
• Newton's third law, the law of action reaction
• The law of universal gravitation

Tags

NGSS.HS-PS2-1

A hawk at rest on a branch will remain at rest until it leaves the branch and the unbalanced force of gravity causes it to positively accelerate.  This is an example of 

• Newton's first law, the law of inertia
• Newton's second law, the law of acceleration
• Newton's third law, the law of action reaction
• The law of universal gravitation

Tags

NGSS.HS-PS2-1

The friction that keeps non-moving objects in place describes

• Sliding friction
• Fluid Friction
• Static Friction
• Rolling friction

The friction that occurs when a liquid or a gas opposes the motion of an object describes

• static friction
• Rolling friction
• Sliding friction
• Fluid Friction

The type of friction that occurs when two surfaces slip past each other describes

• Static Friction
• Rolling Friction
• Sliding Friction
• Fluid Friction

The strength or force of an object's motion, related to the mass of the object and it's velocity describes 

• Gravity
• Momentum
• Force
• Acceleration

Tags

NGSS.HS-PS2-1

The two dimensional space something takes up, measured in square centimeters, which can be found using length x width describes

• air resistance
• gravity
• volume
• surface area

Pushes or a pulls, if they are balanced, no acceleration occurs, but if they are unbalanced, objects accelerate

• velocity
• friction
• forces
• mass

Tags

NGSS.HS-PS2-1

The type of friction that occurs when wheels or other round objects rotate over a surface 

• Static Friction 
• Rolling Friction
• Sliding Friction
• Fluid Friction