Force and Motion 3/1/2024

Billy rolls a toy truck filled with marbles across the kitchen floor. He then

dumps the marbles before rolling it back to his starting location. How

would the speed of the truck most likely change on the way back?

• The speed would increase due to friction.

• The speed would increase due to a change in mass.

• The speed would decrease due to a change in mass.

• The speed would decrease due to a change in gravity.

Students rolled a 22-gram car down three different ramps. The results from the investigation are shown in the table. Which statement BEST explains why the car rolled down the wood ramp the fastest?

• There was more force applied to the car on the wood ramp.

• There was less friction on the surface of the wood ramp.

• The wood ramp was higher than the other ramps.

• The car on the wood ramp had more mass.

Which investigation will BEST test the effects of gravity on moving objects?

• pencils falling from the same height

• balloons floating upward from the same height

• a bicycle speeding up on a flat surface

• a ball slowing down on a flat surface

Four different students take turns pushing a large, heavy ball on the school parking lot.

What is the BEST way to determine which student used the most force to push the ball?

• compare the sizes of the students

• compare the ages of the students

• compare the distances that the ball rolled

• compare the number of times the ball was rolled

In a science lab, students measured how long it took for a block to slide down a ramp. What were the students comparing in this experiment?

• the amount of frictional force acting on the block

• the amount of gravitational force acting on the block

• the amount of frictional force acting on the ramp

• the amount of gravitational force acting on the ramp

A 30 gram ball rolls along a flat surface at a constant speed in the same

direction over 20 meters in 4 seconds. Which is the speed of the ball?

(speed = distance ÷ time)

• 0.2 meters per second

• 0.5 meters per second

• 20 meters per second

• 5 meters per second

Kyle and John are taking a road trip. The car travels a greater distance

during the second hour of the trip than the first hour. Which can most

likely be concluded?

• The car is moving at a constant speed during the entire trip.

• The car is moving faster during the first hour of the trip than in the

  second hour.

• The car is moving faster during the second hour of the trip than in the

  first hour.

• The car is moving in a different direction the second hour of the trip

  than in the first hour.

Reorder the running times from fastest to slowest.

• 5.15

• 4.74

• 5.51

• 6.0

• 4.44

Mason pushed a cart containing a stack of textbooks and stopped

suddenly. Which would most likely happen to the books on the cart?

• The books would slide sideways off of the cart.

• The books would slide off the front of the cart.

• The books would slide off of the back of the cart.

• The books would stay stacked until the cart moves again.

Scott dropped a sheet of paper from a second floor balcony. The wind was blowing in the direction shown in the diagram. In which direction did the sheet of paper MOST likely travel?

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