Category 2: Force & Motion

These boys are pulling with the same amount of force. What will happen?

• The boy in blue will win.

• They will not move at all.

• The boy in red will win.

• Both will fall down.

During a demonstration of Newton’s laws of motion, a student used the setup shown in Figure 1. The student flicked the index card with a fingertip, and the coin fell straight down into a plastic cup as shown in Figure 2. Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?

• The coin was at rest until the card was removed, so it tended to remain in the same location. Once the card was gone, the unbalanced force of gravity caused the coin to fall.
• Moving the card applied an action force on the coin. Since the card was gone, gravity applied a reaction force on the coin.
• The card had less mass than the coin, so a smaller force of gravity acted on the card. The larger force of gravity on the coin made it fall.
• The acceleration of the coin falling into the cup was equal and opposite to the acceleration of the card.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Based on the information in the diagram, what will happen next?

• The flag on the rope will be pulled to the right.

• Both teams will be pulled toward the center.

• The flag on the rope will be pulled to the left.

• Both teams will be pushed away from the center.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Describe the motion of the car:

• accelerating left
• constant speed
• accelerating right
• constant speed

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

According to the graph how far does the person travel in the first 5 seconds?

• 2 m

• 10 m

• 0 m

• 5 m

Tags

NGSS.MS-PS3-1

What is the person doing from 5 seconds to 10 seconds?

• Walking 
• Running
• Standing Still 
• Walking Fast

Tags

CCSS.HSF.IF.B.4

What does this graph represent?

• Constant Speed
• Acceleration
• Not moving

Tags

NGSS.MS-PS3-1

What is the tendency of an object to resist a change in motion?

• coffee
• motion
• inertia
• gravity

Tags

NGSS.MS-PS2-2

Which of the following describes an application of Newton’s Law of Inertia?

• A car stops suddenly, but the passengers in the car are thrust forward into the seat belts.
• The force pushing downward on a box is equal to the force pushing upward on the box
• Earth’s tectonic plates collide with equal force and equal acceleration.
• The force of gases pushing downward from a rocket launch the rocket upward against gravity

According to Newton’s Law of Inertia, an object that is moving will change its motion only if what kinds of forces act on it?

• Constant forces
• Unbalanced forces
• Unbalanced forcesStrong forces
• Gravitational forces

Tags

NGSS.MS-PS2-2