Forces and Motion Review

After throwing a basketball through the net, Anna observed the ball as it hit the ground. Which is most likely responsible for the ball hitting the ground?

• friction

• gravity

• mass

• speed

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NGSS.MS-PS2-4

Chris climbs onto a skateboard ramp halfway between the top and the bottom of the ramp. Because gravity acts on Chris, which is most likely to happen?

• He won't move.

• He will roll up the ramp.

• He will roll down the ramp.

• He will float about the ramp.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The chart above shows four identical wagons loaded with different amounts of bricks. If the same amount of effort is applied to all four identical wagons, why would Wagon W move farthest?

• It has the least amount of mass, affecting its motion.

• It has the least amount of speed, affecting its motion.

• It has the greatest amount of gravity, affecting its motion.

• It has the greatest amount of friction, affecting its motion.

Tags

NGSS.MS-PS2-2

Katie was pulling a sled with her puppy in it. Katie’s sister then got into the sled with the puppy. How would the sled’s speed most likely change after Katie’s sister got into the sled?

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

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

• The speed would increase due to the change in friction.

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

Tags

NGSS.MS-PS2-2

Ana is pushing a wheelbarrow of rocks. She stops and unloads half of the rocks. How will this affect the force needed to move the wheelbarrow?

• Gravity is increased, making the wheelbarrow easier to move.

• Gravity is decreased, making the wheelbarrow harder to move.

• Friction is increased, making the wheelbarrow harder to move.

• Mass is decreased, making the wheelbarrow easier to move.

Tags

NGSS.MS-PS2-2

How fast was a train moving if it traveled 100 meters in 10 seconds? (speed = distance ÷ time)

• 1 meter per second

• 10 meters per second

• 90 meters per second

• 100 meters per second

A 30 gram ball rolls along a flat surface at a constant speed in the same direction over 4 meters in 20 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

• 80 meters per second

Object Y traveled 700 meters in 10 seconds. Object Z traveled 500 meters in 10 seconds. How much faster was Object Y than Object Z? (speed = distance ÷ time)

• 2 meters per second

• 20 meters per second

• 40 meters per second

• 60 meters per second

Mike and Rachel ride their bikes 1 mile to the park and then ride their bikes 1 mile to the store. It takes them longer to get to the park than it takes to get to the grocery store. Which can most likely be concluded?

• Mike and Rachel biked faster to the park.

• Mike and Rachel biked faster to the store.

• Mike and Rachel went a different way to the park and the store.

• Mike and Rachel biked the same speed to the park and the store.

Tags

NGSS.MS-PS2-2

Jose was driving to New York City. He traveled 100 miles in the first hour of the trip and 20 miles in the last hour of his trip. Which can we say about Jose’s drive? (speed = distance ÷ time)

• Jose drove less than 120 miles.

• Jose drove faster the first hour of his drive.

• Jose drove slower the first hour of his drive.

• Jose drove the same speed for the entire drive.