Units
What is the SI units for displacement?
meters
What does the slope of a position-time plot give?
Velocity
What is Newton's third law?
Every action force has an equal and opposite reaction force
Kinetic and Potential Energy
What is Mr. Hok's cat's name?
Chicken
The SI unit for force is
Newtons
Cat is running after a bird, he goes from 10 m/s to 30 m/s in 4s. What is his acceleration?
5 m/s2
A block is being pulled with 50 N eastward and 30 N westward. What is the magnitude and direction of the net force?
20 N eastward
What is the kinetic energy of a 500g ball moving at 10m/s?
25 J
What country did Mr. Hok grow up in?
Cambodia
What are the three fundamental mechanical units in physics?
Meter, kilogram, and seconds
A train is moving at a constant 3 m/s. What is its displacement after 10s?
30 m
A 5kg block is being pulled with 40 N eastward and 60 N westward. What is the magnitude and direction of the net acceleration?
4 m/s2
What is the potential energy difference of a 2kg rock being dropped 10m?
-196 J
What did Mr. Hok get his undergraduate degree in?
Physics and Chemistry
kgm2/s2
A train begins at 20 m/s and constantly accelerates at 1 m/s2. What is its displacement after 15s?
412.5 m
A 50kg block is resting on a rough surface (us = 0.8). What is the maximum force that can be applied such that the block is barely slipping?
392N
A ball is dropped off a 30m cliff. What is the velocity of the ball right before it reaches the ground?
24.2 m/s
What instrument does Mr. Hok play?
Guitar
What fundamental units does Watts break down into?
kgm2/s3
A ball is dropped from 30m. How long does it take to hit the ground?
2.47 s
A 10kg block is being pushed with 50 N westward over a rough surface (uk = 0.4). What is the magnitude and direction of the net acceleration?
1.08 m/s^2 westward
A 500g ball is thrown upwards with 30J of energy. What is its velocity at 3m?
7.82 m/s
What position did Mr. Hok play in his HS volleyball team?
Setter