3. What do you call the path followed by an object under projectile motion?
A. Project B. Projectile
C. Target
D. Trajectory
4. How do you describe the trajectory of a projectile?
A. Circular B. Elliptical
C. Hyperbola D. Parabola
5. What force keeps an object from reaching the ground?
A. Frictional Force
C. Gravitational Force
B. Magnetic Force
D. Tension Force
6. If you throw a baseball straight up, what is its vertical velocity at the highest point?
A. O m/s
B. 9.8 m/s
C. O m/s2
D.-9.8 m/s2
7. What is the acceleration of a baseball as it returns to the ground?
A 0 m/s
B. 9.8 m/s C.0 m/s2
D.-9.8 m/s2
8. What happens to the vertical velocity of an object as it travels through the air?
A Changes continuously
C. Gradually increasing
B. Gradually decreasing
D. Remains the same
9. What happens to the horizontal velocity of an object as it travels through the air?
A. Changes continuously
C. Gradually increasing
B. Gradually decreasing
D. Remains the same
10. If a stone is horizontally launched at a certain height, what will be the vertical velo
as it reaches the ground?
A Cannot be determined
C. Gradually increasing
B. Gradually decreasing
D. Remains the same​