Force and Motion

What happens when two unequal forces push an object in the same direction?

• The forces add together. The causes the object to move in the direction of the force.

• Some of the engery of motion of the two objects is converted into heat.

• The forces subtract from each other and the object will not move as much.

• The object will not move at all.

Which scientist gave us the laws of motion?

• George Washington
• John Adams
• Sir Isaac Newton

What is the meaning of acceleration?

• any change in the speed or direction of an object
• where an object is located
• the pull of gravity on an object

 The diagram shows forces acting on a box. 
Which statement best describes what will happen to the box as a result of these forces being applied? 

• The box will move up. 
• The box will move to the left.
• The box will move to the right. 
• The box will remain stationary.

Why is it harder for the boy in Image B to get down the hill?

• Motion
• Friction
• Work
• Displacement

Which graph shows constant speed, decrease in speed,

and then a constant speed?

• Graph on left

• Both Graphs

• Graph on right

• Neither graph

The force that pulls all objects toward Earth is called_____.

• movement

• free fall

• gravity

• acceleration

Will and Tammy are moving a dresser. They are arguing about which direction to move it. Will is pushing the dresser with a force of 5 newtons towards Tammy. Tammy is pushing the dresser towards Will with a force of 10 newtons. What happens to the dresser? 

• The dresser does not move. 
• The dresser moves towards Will. 
• The dresser moves towards Tammy. 
• The dresser moves towards Tammy, then back towards Will. 

How can this motion best be described?

• Car at a constant speed

• Stopping at a light

• Slowing down

• Speeding up

Balanced forces do not change the objects speed or 

• direction
• distance 
• time
• mass