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Projectile
Question | Answer |
---|---|
Vertical and horizontal motion are __________________ of each other. | independent |
If a bullet were fired at the same height a bullet is dropped they hit the ground at the _______________ time. | same |
The only force that is acting on a projectile is ____________. | gravity |
Projectiles travel in the the shape of a ______________. | Parabola |
No ______________forces act on projectiles. | Horizontal |
The horizontal velocity of a projectile is ___________ meaning it never changes its value. | Constant |
What is the value of the vertical acceleration in projectiles? | 9.8 m/s^2 |
The vertical velocity of a projectile ___________by 9.8 m/s^2 each second. | changes |
Time will be ____________for objects launched or dropped from the same height. | the same |
Gravity causes ______________________acceleration. | downward |
Horizontal motion is consistent with Newton's first Law, the Law of _____________. | inertia |
Dx refers to the _______________________distance. | horizontal |
Dy refers to the _______________________distance. | vertical |
When objects fall downward, 9.8 m/s^2 is negative and so is the value for _______________. | distance |
A cannonball is launched at 20 m/s, what is the velocity in the x direction (dx) when it hits the ground? | 20 m/s |