Share Physical Science Semester 2 Unit 8 Exam
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What is the formula for velocity?
Velocity = displacement/ time
What is the formula for acceleration?
Acceleration = velocity/ time
What is the pythagorean theorem?
a^2 + b^2 = c^2
What do you use the pythagorean theorem for in kinematics problems?
Displacement with vectors
Is speed a scalar or a vector?
speed is scalar
Is velocity a scalar or a vector?
velocity is a vector
What has magnitude and direction?
Velocity and Acceleration
True or False: Velocity and Acceleration are BOTH vectors.
True. Acceleration is derived from velocity.
True or False: The units for velocity are m/s^2 and the units for acceleration are m/s.
False. The units for velocity are m/s. And the units for acceleration are m/s^2
What is the formula for force?
F =ma
An object has an acceleration of 3 m/s^2 and a mass of 15 kg. Calculate the force acting on the object.
F = 45 N
An object has an acceleration of 4 m/s^2 and a mass of 25 kg. Calculate the force acting on the object.
F = 100N
What formula involves final velocity and initial velocity?
Vf = Vi + at
What are the units for time?
s (seconds)
What are the units for force?
N (newtons) or kg x m/2^2
A large textbook is pushed across the desk in your classroom. What forces are acting on this textbook? Draw a Free Body Diagram showing the forces.
Upward force = FN (normal force), Downward force = Fg (force of gravity), Right force = Fapp (applied force), Left force= Ff (force of friction)
