Vectors
Name three vector quantities that we have studied this semester
Displacement, velocity, acceleration, force, tension, normal force, friction, weight
A marble rolls off the ledge of a horizontal table with a horizontal velocity of 0.05 m/s. What is the initial vertical velocity of the marble when it starts falling?
0 m/s
A marble rolling on a table falls from the edge with horizontal velocity of 0.05 m/s2 . What is the initial vertical velocity of the marble when it starts to fall?
0 m/s
True or false: The normal force is opposed to the direction of motion.
False.
What food stand is located right to the left of La Flor de Córdoba at Universidad's Ciberplaza?
Gong Cha
The total angle of a vector that points 30° Southwest is:
210°
A stone is dropped from rest from the top of a cliff. Taking g = 10 m/s2 and ignoring air resistance, what is its speed after 3 seconds?
30 m/s
True or false: The time in air of a projectile is always the double of the time it takes for the projectile to reach maximum height.
False
245.25 N
In this campus, there is a pollinator garden. Where is it located?
Next to the bus parking lot.
What is the horizontal component of a velocity that is V = 20 m/s, 10° Southeast?
19.7 m/s
What is the velocity of a ball just before it hits the ground, if you let it fall from a 16.4 m height?
17.94 m/s, downwards.
A tennis ball cannon launches a ball with an initial velocity of 25.5 m/s at 40° above the horizontal. If the ball comes back to the ground in 3.34 s, what is the maximum horizontal distance the ball can travel?
65.27 m
A wooden crate of mass 10 kg is pulled along a flat horizontal floor. The coefficient of kinetic friction between the crate and the floor is 0.3. Taking g = 10 m/s2, what is the magnitude of the friction force acting on the crate?
30 N
When is the Pet's Day of the Dead celebrated?
October 27th
A force F1 = 680 N, 20° Northwest is added to another force F2 = 950 N, North. What is the vertical result of the addition of these forces?
1182.57 N
A child at the park throws a ball upwards with an estimated velocity of 6.1 m/s. How high can the ball reach?
h = 1.9 m
An arrow is launched with an initial velocity of 13.1 m/s with an angle of 42° above the horizontal. What is the horizontal component of the vleocity when the arrow is at its highest point?
9.74 m/s
Read the problem on the screen. What is the value of the force of friction?
The magnitude of friction is 5263.16 N
Gambling time: The answer will reveal either "cat" or a "dog". Place your bet, if you get it right, you double your points. If you guess wrong, you lose your bet.
Dog
After finishing a race, you see the path you ran in your phone, showing two displacements: A = 10 km, 130° and B = 15 km, 40°. What was the magnitude of your displacement A + B?
18.03 km
You throw a ball upwards with a velocity of 22 m/s. How much time will it take to travel a height of 8 m? Double your points if you find the two time marks the ball crosses the 8 m height.
First time: t = 0.39 s. Second time: t = 4.09 s
A projectile is launched at a velocity of 16 m/s at 25° above the horizontal. What is the maximum height of the projectile? How long is the time in air of the projectile?
Max. height: 2.33 m, time in air: 1.38 s
Read the problem on the screen. What is the value of the inclined force?
981 N
What English word has three consecutive double letters?
Bookkeeper, Bookkeeping