6th Grade MCA Review 2023

A ball will be rolled four times. In which of the following situations will some of the kinetic energy of the ball be converted into potential energy as the ball rolls?

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When does the popper have potential energy?  

• When it is flying in the air

• When it is turned inside out

• When it lands

• When it goes to the beach

When does the popper have kinetic energy?  

• When it is flying in the air

• When it is turned inside out

• When it lands

• When it goes to the beach

The diagram shows the path of a ball bouncing on the ground. Four locations in the path are identified with numbers.

At which location does the ball have the greatest amount of kinetic energy?

• Location 1

• Location 2

• Location 3

• Location 4

A boy has a ball on a string. He swings the ball in a circle above his head. The diagram is a top view of this situation. If the boy releases the string when the ball is at point R, at which point will the ball land?

• Point W

• Point X

• Point Y

• Point Z

A rock is dropped from a window 5 m above the ground. The rock hits the ground 1.0 s later. What is the speed of the rock during this time?  

• 5 m/s

• 8 m/s

• 15 m/s

• 50 m/s

Tobias rode his bike on a road for a 1 hr period. On average, he passed a 1 km marker every 3 min during this period. Which of the following was his speed for this 1 hr period?

• 10 km/hr

• 15 km/hr

• 20 km/hr

• 25 km/he

The graph shows the motion of four different cars over a period of 5 s.

Which car had an average speed of 4 m/s?

• Car A

• Car B

• Car C

• Car D

The graph represents the motion of a runner during a 2000-meter race.

During which of the following time periods is the runner’s speed constant?

• 0–8 min

• 2–8 min

• 4–8 min

• 6–8 min

A student rolls a ball down the ramp shown in the picture 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 accelerates more quickly down the ramp.

• The ball has a higher speed at the top of the ramp.

• The ball takes more time to reach the bottom of the ramp.

• The ball has a higher average speed when it rolls off the ramp.