1-D Motion
Vector quantity that accounts for distance and direction
What is displacement
What vectors are divided into to complete vector addition or subtraction
What are x and y components
Resistance that matter has to changes in motion
What is inertia
Father of experimental physics who performed experiments involving mechanics, or the study of motion
Who is Galileo Galilei
The path of motion for projectile motion
What is a parabola
Once an object is in motion, it experiences the force of this kind of friction.
What is kinetic friction
The units for velocity, acceleration, displacement, and time
What are m/s, m/s2, m, and seconds
The term for thetao
What is projection angle
The direction that frictional force is in
The opposite direction when compared to the direction of motion
The equation that would be used to solve this problem:
A race car starting from rest accelerates at a constant rate of 5.00m/s2. What is the velocity of the car after it has traveled 30.5 m?
What is v2 = vo2 + 2a(xf-xi)
The equations used to solve this practice problem:
A ball is thrown upward from the top of a building at an angle of 30.0 degrees above the horizontal and with an initial speed of 20.0 m's. The point of release is 45.0 m above the ground. (a) How long does it take for the ball to hit the ground? (b) Find the ball's speed at impact.
What is (a) y - yo = voyt -1/2gt2 and (b) vy = voy - at
This law and its equation is used when an object experiences a net force that produces an acceleration and causes it to no longer be in equilibrium (it is arguably the most important in physics and all of science)
What is Newton's 2nd Law; Sum of F = ma
Practice Problem (8 minutes to solve!)
A ball is thrown from the top of a building with an initial velocity of 20.0 m/s straight upward, at an initial height of 50.0 m above the ground. The ball falls straight down to the ground. Determine (a) the time needed for the ball to reach its maximum height and (b) the maximum height.
What is (a) 2.04 s and (b) 20.4 m
Practice problem (8 minutes to solve!)
A jet plane traveling horizontally at 100. m/s drops a rocket from a considerable height. The rocket immediately fires its engines, accelerating at 20.0 m/s2 in the x-direction while falling under the influence of gravity in the y-direction. When the rocket has fallen 1.00 km, find (a) its velocity in the y-direction, (b) its velocity in the x-direction, and (c) the magnitude and direction of its velocity.
What is (a) -140. m/s, (b) 386 m/s, and (c) 411 m/s at -19.9 degrees
Practice Problem (8 minutes to solve!)
A 150-N bird feeder is supported by 3 cables. If cable 1 is attached at 60 degrees, cable 2 is attached at 30 degrees, and cable 3 is holding the bird feeder, find the tension in all three cables.
What is T1 = 130 N, T2 = 75 N, and T3 = -150 N