McEvoy - Force and Motion Retest 2022-23

 1. Two runners ran a 100 meter race in a northward direction. What was runner 1's velocity  after 30 seconds? (Note: Use your SPEED formula and think of what information velocity tells you)

• A. 2 m/s West

• B 25 m/s West

• C 60 m/s North

• D. 2 m/s North

2.  A toy car is wound up and released on a tile floor.  Which could make the car travel faster?

• A. Apply force to the top of the car.

• B. Place a 50 gram mass inside the car.

• C. Release the car on a rough surface.

• D. Push the car in the direction of the motion.

Tags

NGSS.MS-PS2-1

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3. A ball is moving to the right.  If force is applied in the direction of the dashed arrow, the ball could be expected to --

• A. accelerate

• B. stop moving

• C. continue its motion

• D. change velocity to the left

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NGSS.MS-PS2-1

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4.  An object’s inertia is its tendency to keep doing what it is doing.  Which object would have the greatest inertia?

• A. A 1 g rock

• B. A 25 g rock

• C. A 500 g rock

• D. A 2000 g rock

Tags

NGSS.MS-PS2-2

5.  According to Newton's Third Law of Motion, if Box R and Box T crash into one another, 

• A. Box R will move backwards faster than Box T.

• B. Box R will move backwards slower than Box T.

• C. they will both apply an equal but opposite force on each other.

• D. they will both stop moving as soon as they crash.

Tags

NGSS.MS-PS2-1

6. Calculate the acceleration of Box R.  Choose an  answer. Remember the F=MA Triangle. 

• A. 3 m/sec2

• B. 10 m/sec2

• C. 40 m/sec2

• D. 300 m/sec2

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

7. A box is sitting on a flat surface.  Two forces are applied to the 6 kg box. If there were no friction, what will happen to the box?

• A. It will accelerate at 2 m/s2 with a balanced net force of 12 N to the right.

• B. It will accelerate at 2 m/s2 with an unbalanced net force of 12 N to the right.

• C. It will accelerate at 2 m/s2 with a balanced net force of 12 N to the left.

• D. It will accelerate at 2 m/s2 with an unbalanced net force of 12 N to the left.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

8.  Which of the following statements correctly describes speed, velocity and acceleration?

• A. Speed is the change of velocity; Velocity is how fast an object goes; Acceleration is speed with direction.

• B. Speed is the change of velocity; Acceleration is how fast an objects goes; Velocity is speed with direction.

• C. Velocity is the change of speed; Acceleration is how fast an objects goes; Speed states direction.

• D. Acceleration is the change of velocity; Speed is how fast an objects goes; Velocity is speed with direction.

Tags

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