| A | B |
|---|
| What is the path of a projectile? | a parabola |
| A piece of chalk is dropped by a teacher walking at a speed of 1.5 m/s. From the teacher's perspective, the chalk appears to fall | straight down |
| Which of the following is the cause of an acceleration or a change in an object's motion? | force |
| Which of the following forces exists between objects even in the absence of direct physical contact? | field force |
| Which of the following forces is an example of a field force? | gravitational force |
| A car goes forward along a level road at constant velocity. The additional force needed to bring the car into equilibrium is | zero |
| Which are simultaneous equal but opposite forces resulting from the interaction of two objects? | action-reaction pairs |
| What is the common formula for work? | W=Fd |
| Work is done when | the displacement is not zero |
| Which of the following energy forms is NOT involved in hitting a tennis ball? | chemical potential energy |
| Which of the following forms is involved in winding a pocket watch? | elastic potential energy |
