Review: Physics Calculations and Newton's Laws

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This is the (a)  

• Law of Inertia
• Law of Force Pairs
• Law of Acceleration

Force is equal to mass times acceleration (F=ma). Therefore more massive objects are harder to move. This is the (a)  

• Law of Acceleration
• Law of Inertia
• Law of Force Pairs

The greater the mass of an object being moved, the greater amount of force needed to move (accelerate) the object. This is the (a)  

• Law of Acceleration
• Law of Inertia
• Law of Force Pairs

This is caused by objects rubbing together. (a)  

• Friction
• Gravity
• Wind Resistance

A rocket pushes burning gases DOWN which causes the rocket to launch UP. Which law is this?

• Newton's 1st Law - Law of Inertia

• Newton's 2nd Law - Law of Acceleration

• Newton's 3rd Law - Law of Force Pairs (Action, Reaction)

Tags

NGSS.MS-PS2-1

A skateboarder pushes the ground BACKWARDS which causes the board to move FORWARD.

• Newton's 1st Law - Law of Inertia

• Newton's 2nd Law - Law of Acceleration

• Newton's 3rd Law - Law of Force Pairs (Action, Reaction)

When a horse stops suddenly, the rider on its back continues to move forward onto the ground. Which law is this?

• Newton's 1st Law - Law of Inertia

• Newton's 2nd Law - Law of Acceleration

• Newton's 3rd Law - Law of Force Pairs (Action, Reaction)

​ (a)   do not cause an object to move.

• Balanced forces
• Unbalanced forces

If force is applied to an object on two sides, and that force is NOT the same, then the object will move in the direction of the greater force. Which type of force is responsible for this?

• Balanced Force

• Unbalanced Force

Is this balanced or unbalanced force? What movement will there be?

• Balanced Force

• Unbalanced Force

• No movement

• Movement to the left