Need for Speed

“Ball C" is rolling across the surface, but it eventually comes to a stop. Which force is most likely responsible for this?

• gravity

• friction

• electricity

• magnetism

Tags

NGSS.MS-PS2-2

A student sets up the cardboard tube shown. The student holds the tube at an angle. The student drops a ball into each hole, then measures how fast the ball travels when it comes out of the tube. 

Dropping the ball into which hole will cause the ball to travel the fastest?

• Hole 1, because the ball will have the most potential energy

• Hole 2, because the ball will have the most kinetic energy

• Hole 3, because the ball will have the least potential energy

• Hole 4, because the ball will have the least kinetic energy

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Students took turns rolling a ball across a classroom floor. A sensor measured the speed of the ball at the one-meter mark. The students recorded the speed in a data table. Which conclusion is supported by the data?

• The ball had the most energy on roll 1.

• The ball had the least energy on roll 4.

• The ball had less energy on roll 1 than on roll 2.

• The ball had more energy on roll 2 than on roll 3.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Students are making paper airplanes. Each airplane will have a different design. The students want to determine which airplane will fly the farthest. To test the airplanes, the students make two rules. Which method best allows students to launch the airplanes with the same force?

• Have different students launch each of the airplanes by throwing them.

• Wait for a strong wind to launch each of the airplanes.

• Blow into a straw attached to each airplane to launch them.

• Stretch a rubber band to the same length to launch each airplane.

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-2

What type of energy do you produce when you ride a bicycle?

• sound energy

• solar energy

• light energy

• energy of motion

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Alana was walking with her family along the Mississippi River. As they walked along the levee, Alana was observing the water’s movement. Water was moving past the rocks at a fast speed. When Alana asked her mom about the energy of the water, her mom told her that because the water was moving quickly, that meant it possessed a lot of energy. Based on this passage, what can you infer about the relationship between speed and energy?

• As an object’s speed increases, its energy decreases.

• As an object’s speed decreases, its energy increases.

• Speed and energy are not connected.

• As an object’s speed increases, its energy increases.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

When two moving objects collide, the motion of both objects will change. Why does the motion of the objects change during a collision?

• Energy is transferred from one object to the other, causing a change in speed.

• Energy is transferred into heat and sound, causing you to hear the objects.

• Objects lose mass when they collide, so they weigh less.

• The motion of all objects is changing all the time.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-5

What is the relationship between speed and kinetic energy?

• Kinetic energy is directly proportional to the square of speed

• Kinetic energy is inversely proportional to speed

• Kinetic energy is directly proportional to speed

• Kinetic energy is not related to speed

Tags

NGSS.MS-PS3-1

Which of the following experiments can demonstrate the effect of speed on friction?

• Rolling a ball down a slope and measuring the distance it travels

• Dropping a feather and a stone from the same height

• Heating a metal rod and measuring its expansion

• Mixing vinegar and baking soda to observe a reaction

Tags

NGSS.MS-PS3-1

A car accelerates from rest to a speed of 20 m/s in 5 seconds. What is its average acceleration?

• 4 m/s²

• 5 m/s²

• 10 m/s²

• 20 m/s²

Tags

NGSS.HS-PS2-1