Test Your Knowledge

1. If you apply a thrust thirteen times to the right, how many thrusts to the left will you need to apply to stop the PSA before it hits a wall?
A. 13
B. 14
C. 15
D. 12

2. If there are no other forces acting on the PSA, and you give one upward thrust to the PSA, how long will it be before the PSA stops?
A. 5 seconds
B. 10 seconds
C. 25 seconds
D. It will never stop

3. If you apply a thrust five times to the right and five times upward, what will you need to do to stop the PSA before it hits a wall?
A. Apply 10 thrusts to the left
B. Apply 5 thrusts downward
C. Apply 5 thrusts to the left and 5 thrusts downward
D. Apply 10 thrusts to the left and 10 thrusts downward

4. A PSA with more mass will:
A. Move more quickly than a PSA with less mass
B. Require more force to move it than a PSA with less mass
C. Require less force to move it than a PSA with less mass
D. Drain the battery slower than a PSA with less mass

5. Which of the following robots would be best for moving around in microgravity safely and using the least amount of power?
A. A PSA with more mass and fans on all sides
B. A PSA with more mass and a fan on one side and on the front
C. A PSA with less mass and a fan on one side and on the front
D. A PSA with less mass and fans on all sides

<< Back to the main Activities page