WHAT IS THE VOCABULARY OF LAB SAFTY?
PASS method, fire extinguisher , fire blanket, rally point, lockdown, shelter in place, hazardous, PPE.
what are the symbols of dimensional kinematics?
X, Vo, Vf, T,A,G
what are the symbols of vectors/conversion?
X, Y, |R,0
what the symbols for Newton`s law/forces?
W, Fa, Ff, Fn, m, a,g
what are the symbols for horizontal projectile motion?
X, V0x, Vtx, t,Ax, g,y, V0y, Vty
After completing an experiment, all chemical wastes should be?
A. left at your lab station for the next class.
B. disposed of according to your instructor’s directions.
C. dumped in the sink.
D. taken home.
disposed of according to your instructor’s directions.
If an object has an acceleration of 0 m/s2, then one can be sure that the object is not ____.
a. moving
b. changing position
c. changing velocity
changing velocity
Given the SCALE: 1 cm = 10 m, represent the vector 50 m, 30-degrees by a scaled vector diagram
The vector 50 m, 30-degrees (SCALE: 1 cm = 10 m) would look like this:
Which of the following statements are true of inertia? List all that apply.
4-5
The acceleration of a freely falling object. It's value near the surface of the Earth is about 9.8 m/s
Acceleration due to gravity
Flammable materials, like
A. an open door.
B. an open flame.
C. another student.
D. a sink.
alcohol, should never be dispensed or used near
an open flame
Which one of the following is NOT consistent with a car which is accelerating?
4. a car is moving with high speed
Given the SCALE: 1 cm = 5 m/s, represent the vector 35 m/s, 270-degrees by a scaled vector diagram.
The vector 35 m/s, 270-degrees (SCALE: 1 cm = 5 m/s) would look like this:
According to Newton's third law, every force is accompanied by an equal and opposite reaction force. The reason that these forces do not cancel each other is ____.
a. the action force acts for a longer time period
b. the two forces are not always in the same direction
c. one of the two forces is greater than the other
d. the two forces act upon different objects; only forces on the same object can balance each other.
e. ... nonsense! They do cancel each other. Objects accelerate because of the presence of a third force
Equality formula
Vfx=Vix=Cnst
You want to place a piece of glass tubing into a rubber stopper after the tubing has been fire polished and cooled. This is best done by
A. lubricating the tubing with water or glycerin.
B. using a towel or cotton gloves for protection.
C. twisting the tubing and stopper carefully.
D. all of the above.
all of the above.
a fullback is running down the football field in a straight line. He starts at the 0-yard line at 0 seconds. At 1 second, he is on the 10-yard line; at 2 seconds, he is on the 20-yard line; at 3 seconds, he is on the 30-yard line; and at 4 seconds, he is on t
he 40-yard line. This is evidence that
3. he is moving with a constant speed (on average).
what`s the vocabulary of vector`s/conversion?
Scalar, vector, resultant, components of vectors, horizontal component, vertical component, gig-, mega-, hecta-, kilo- deca-, centi-, micro-.
Which of the following statements are true of an object that experiences balanced forces (or unbalanced forces)? List all that apply.
None of these are true, though one might make a strong argument for I
Formula to find Dx
Dx=Vxt
True or False
Pipets are used to measure and dispense small amounts of liquids. You should draw the liquid into the pipet using your mouth.
False
A fullback is running down the football field in a straight line. He starts at the 0-yard line at 0 seconds. At 1 second, he is on the 10-yard line; at 2 seconds, he is on the 20-yard line; at 3 seconds, he is on the 30-yard line; and at 4 seconds, he is on the 40-yard line. What is the player's acceleration
0 m/s/s
Given the SCALE: 1 cm = 50 km/hr, determine the magnitude and direction of this vector.
The direction is 225 degrees (the counter-clockwise angle of rotation from due East).
The magnitude is 160 km/hr; 3.2 cm in length multiplied by the factor (50 km/hr)/1 cm
Little Billie weighs 360 N on Earth. What is Little Billie's mass on the moon where the force of gravity is approximately 1/6-th that of Earth's? ________
~36 kg
a soccer ball is kicked horizontally off a 22.0-meter high hill and lands a distance of 35.0 meters from the edge of the hill. Determine the initial horizontal velocity of the soccer ball
Horizontal Info:Vertical Info: x = 35.0 m y = -22.0 m vix = ??? viy = 0 m/s ax = 0 m/s/s ay = -9.8 m/s/s
Use y = viy • t + 0.5 • ay • t2 to solve for time; the time of flight is 2.12 seconds.
Now use x = vix • t + 0.5 • ax • t2 to solve for vix
Note that ax is 0 m/s/s so the last term on the right side of the equation cancels. By substituting 35.0 m for x and 2.12 s for t, the vix can be found to be 16.5 m/s