Definitions
A vector quantity includes both magnitude and
What is direction
Term in geometry where the sum of 2 angles equals 90 degrees?
What is complementary
If a tennis ball takes 4.5 sec to reach its peak, how long does it take to reach the other player?
What is 9 s?
Projectile motion can be broken into how many components
2
True or False: Air resistance opposes the direction of a projectile's motion
What is true
Does gravity affect an object at the top of its path?
What is yes
What is the acceleration of a projectile on Earth?
What is -9.8 m/s^2?
The initial horizontal velocity (vi in the x-direction) for a ball thrown horizontally off a cliff is 40 m/s. The ball stays in the air for 3 seconds. How far from the base of the cliff does it land?
What is 120 m?
Horizontal acceleration of a projectile?
0 m/s2
Which launch angle gives the greatest distance travelled?
What is 45 degrees
Because motion in the x-direction and the y-direction are independent of one another, the amount of time a projectile is in the air depends on its _________ velocity.
What is vertical?
A physics student who is curious about the trajectory of a paint ball stands with his gun horizontally and fires it off. The paint ball leaves the gun from a height of 3.5 m and lands on the ground 36.0 m away. How long was the ball in the air?
What is 0.85 s?
If a person is running at a rate of 5mph North, is this a vector or scalar quantity?
What is vector?
When an object is in free fall, does the distance covered increase every second?
What is yes
What is 0
For a ball that’s shot at an angle, explain what happens to the vertical component of the initial velocity and of the acceleration throughout the flight.
What is velocity decreases (from positive to zero to negative and more negative). Acceleration remains the same.
A physics student who is curious about the trajectory of a paint ball stands with his gun horizontally and fires it off. The paint ball leaves the gun from a height of .75 m and lands on the ground 3.0 m away. What was the horizontal velocity?
What is 7.7 m/s?
This velocity is constant throughout the projectile's path.
What is horizontal velocity?
When a ball is rolled across a atable, does the distance covered increase every second?
What is false?
If we shoot a bullet and drop a bullet from the same height at the same time, which bullet hits the ground first?
What is same