Work Force Motion Review

A student placed a stuffed animal on the dashboard of a car. When the car accelerated quickly, the stuffed animal flew back onto the seat. Which principle BEST describes the motion of the stuffed animal as the car accelerated.

• inertia
• speed
• momentum
• gravity

What is the difference between the velocity and the speed of an object?

• Velocity is the change in distance over time, while speed is the change in velocity overtime.
• Velocity has a direction associated with it, while speed has no specific direction.
• Velocity has no direction associated with it, while speed has a specific direction.
• Velocity is the change in speed over time, while speed is the change in distance over time.

The arrows in the diagram below represent the forces acting on a moving bicycle at two different times, time 1 and time 2. The length of the arrow represents the amount of force being applied. As a result of the change in the forces from time 1 to time 2 the bicyclist will...

• move slower in a forward direction
• move faster in a forward direction
• move in a backward direction
• stop moving

Tags

NGSS.MS-PS2-2

Students are exploring the relationship between velocity and acceleration. This graph shows the acceleration of a remote-controlled toy car. Which statement is TRUE based on the graph?

• Segment AB and Segment CD show positive acceleration.
• Segment OA and Segment DE show positive acceleration.
• Segment OA and Segment BC show constant speed.
• Segment BC and Segment EF show constant speed.

Tags

NGSS.MS-PS3-1

A student rolls a ball on the ground. Which of these causes the ball to slow down and then stop?

• Friction from the ground
• A magnetic field
• The motion of the ball
• The speed of the ball

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

A student made a track for a toy sled using four different materials. At which section of the track is friction MOST LIKELY to cause the greatest resistance to the motion of the toy sled?

• 3
• 1
• 4
• 2

Tags

NGSS.MS-PS2-2

A student rolls a ball down the ramp shown in the picture below. The ramp is supported by four stacked books. The student removes two books from the stack supporting the ramp and rolls the ball down the ramp again. Which of the following statements best describes how the ball's motion is different after the books are removed?

• The ball takes more time to reach the bottom of the ramp.
• The ball has a higher speed at the top of the ramp.
• The ball accelerates more quickly down the ramp.
• The ball has a higher average speed when it rolls off the ramp.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

The graph shows the velocity of a moving train over time. During which two intervals of time was the training moving with a constant, positive acceleration?

• 0-5 and 10-15 minutes
• 5-10 and 15-25 minutes
• 10-15 and 25-30 minutes
• 15-20 and 30-35 minutes

Tags

NGSS.MS-PS3-1

Two equal forces act at the same time on the same stationary object, but in opposite directions. Which statement describes the object's resulting motion?

• The object will change direction.
• The object will move at a constant speed.
• The object will remain stationary.
• The object will accelerate.

Tags

NGSS.MS-PS2-2

Identical materials are used to construct the systems shown to lift a large toy block. Which statement is TRUE about the diagrams shown?

• Diagram 3 will give the greatest mechanical advantage because the fulcrum is placed closest to the applied force (toy block).
• Diagram 2 will give the greatest mechanical advantage because the fulcrum is place evenly between the load (toy block) and the applied force.
• Diagram 1 will give the greatest mechanical advantage because the fulcrum is placed close to the load (toy block).
• Diagram 3 will give the greatest mechanical advantage because the fulcrum is placed far from the load (toy block).

Tags

NGSS.MS-ETS1-2