Graphs
Vectors
Projectiles
100
What is the slope of a distance vs. time graph equal to?
Velocity
100
Is the following a scalar or vector (must get all correct to score points):
Mass
Acceleration
Momentum
Energy
Mass - Scalar
Acceleration - Vector
Momentum - Vector
Energy - Scalar
100
At what angle will a projectile travel the furthest if shot from the ground
45 degrees
200
Sketch a distance vs. time graph and velocity vs. time graph for an object moving at a constant velocity of 3 m/s
distance vs. time graph is straight diagonal line and velocity vs. time graph is a straight flat line
200
A book is pushed with an initial horizontal velocity of 5.0 meters per second off the top of a desk. What is the initial vertical velocity of the book?
0
300
Sketch a distance vs. time graph and velocity vs. time graph for a dropped ball.
Distance vs. time is a power curve. Velocity vs. time is a straight diagonal line.
300
A projectile is fired upwards at an angle of 30 degrees. What is the direction of the projectile's velocity at the point of its maximum height?
In the horizontal direction, because the y-component of velocity equals 0
300
Ball A is thrown horizontally at 5 m/s from a 20m high cliff. Ball B is simultaneously dropped straight down from the same height. Which hits the ground first?
Both at the same time
400
Sketch a graph of the force of gravity as a function of distance between two objects. What is this graph called?
inverse square curve.
400
A block is pulled to the eastward with a force of 5N and southward with a force of 12N. What is the magnitude and direction of the resultant force vector?
13N at 67 degrees South of East
400
An object is thrown horizontally off a cliff with an initial velocity of 5.0 meters per second. The object strikes the ground 3.0 seconds later. How far from the base of the cliff will the object strike the ground?
15 m
500
What is the physical significance of the slope of this line?
The slope is the acceleration due to gravity
500
Add the following vectors using components.
3 m/s at 25 degrees North of East
4 m/s at 75 degrees North of West
5.4 m/s at 72 degrees North of East
500
A football is kicked with an initial velocity of 20 m/s at an angle of 37 degrees. How long is it in the air?
2.46 seconds