7. The acrobats in a circus show stood at the top of the piled chairs without falling. What do you think will happen if he combined force is acting on a stationary object is balance?
A. Begin moving forward B. Remain a rest C. Decrease speed at steady rate D. increase speed and direction
8. Which force is acting on the falling leaves? A. Friction B. Gravity C. Normal D. Tension
9. How does gravity on earth affect how high a person jumps?
A. The weaker the gravity the lower the jump B. The weaker the gravity the higher the jump C. The stronger the gravity the higher the jump D. Gravity does not affect how high one can jump
10. Which of the following describes a falling object?
A. It has accelerated motion B. It can possibly stop moving C. It has decelerated motion D. It can go up
