Vectors and Scalars
The difference between a scalar and a vector.
What is direction?
The acceleration due to gravity
What is 9.8 m/s^2?
What is 45 degrees?
The components on the x direction do not affect
What are the components in the y direction?
Vector is often represented by
What is an arrrow?
The time an object falls depends on
What is initial velocity and/or height?
Projectiles' horizontal velocity has an acceleration of
What is zero m/s^2?
The angle that will allow a launched object to reach the heighest
What is 90 degrees (or straight up)?
In order to find the sum of one vertical and one horizontal component, we use
What is pythagorean theorem?
A ball is thrown up at 5m/s, once it comes back to the initial height, the velocity is
What is -5m/s?
As a projectile has a higher initial horizontal velocity, the time to hit the ground will
What is stay the same?
A boat is heading north with velocity of 3m/s relative to the river. The river has a current of 4m/s heading east. What is the magnitude of the boat's speed?
What is 5m/s?
In order to find the x and y components of a diagonal vector, we use
What is cosine for x and sine for y?
After 2 seconds, an object dropped has a velocity of
What is -19.6 m/s?
A projectile launched at 30m/s horizontally, which takes 5 seconds to hit the ground, will land at a distance of
What is 150 meters?
A plane going at 600 miles per hours drops a package. Neglecting air resistance, when the package lands, its position compared to the plane is
What is directly below/under the plane?
To find the direction of a diagonal component (once we know the x and y components) we use
What is inverse tangent?
After 3 seconds, an object thrown up with velocity 10 m/s has a displacement of
What is -14.1 m?
A projectile has an initial velocity of 20m/s at a 30 degree angle. What is the initial vertical velocity?
What is 20sin(30) (or 10)?
A package falls from a helicopter going 20m/s to the right. After 4 seconds, the package has moved downwards a distance of
What is 78.4 meters down?