Unit 3 Science Assessment

Which statement best explains how a ramp makes it easier to move a heavy object over a certain distance?

• It decreases the amount of force by increasing the distance.

• nothing

• noone

• nada

Three different sized inclined planes are shown. Which inclined plane requires the most amount of force to move an object?

• A

• nothing

• noone

• nada

A child drove a remote control car on a a tile floor for a distance of 1.6 m. The graph represents the motion of the car. Pay attention to the fact that this graph has speed and time instead of distance and time on the x and y axis. Which description of motion is best represented by this graph?

• The speed of the car is constant.

• nothing

• no one

• nada

A student used a wind-up toy to determine the distance the toy could travel in 10 seconds. At one point, the toy stopped and the student had to rewind it. At what time interval was the toy stopped?

• 5-7 s

• nothing

• no one

• nada

The graph shows the distance an object traveled in 11 seconds. Which answer choice best describes the movement of the object between the times of 0 and 6 seconds on the graph?

• Moving at a constant speed

• nothing

• no one

• nada

A hobbyist collected data about the motion of a toy train on a straight track and then recorded the data in the graph below. Which of these accurately describes the motion of the toy train?

• The toy train moves forward at a constant speed, slows down, and then stops.

• nothing

• no one

• nada

A student kicks a soccer ball three times. Another student records the distance, the amount of time the ball travels, and the average speed in the table shown below. How many seconds did it take for the ball to travel 30 m during Kick 3?

• 2.0 s

• nothing

• no one

• nada

The graph below shows the motion of a ball rolling on a straight track. What was the ball’s average speed during the time represented in the graph?

• 0.2 m/s

• nothing

• no one

• nada

The model shows the forces applied when two students push on a box. Which statement does the model NOT accurately represent?

• The two forces acting on the box are equal.

• nothing

• no one

• nada

The diagram represents two students pushing and pulling an object in the same direction. Which statement best describes the result of the forces?

• The object will move in the direction of the combined forces.

• nothing

• no one

• nada