Physcis Flashcards
(25 cards)
What is a scaler
Is quantities that are fully describe by magnitude
What is a vector
Is quantities that are fully describe by both a magnitude and a direction
What is the equation for terminal velocity
Weight - mass x gravitational field strength
What would the resultant be if an object had -10 N are pulling to the left an +3 N to the right. How would you balance it
-7n
What is displacement
Distance in a direcation
How is displacement different to distance
Displacement is a distance given as a direction from the starting point but distance is ground covere
What is Newton’s 1st law
Balanced forces
What is Newton’s 2nd law
every action has a reaction
What is Newton’s 3rd law
Motion
What is a contact force
Friction
What is a non contact force
Graviton last field strength
What is PAG 7 about
Acceleration
What is PAG 6 about
Hook’s law
What is the equation for power
Power(W)= work done(J)
————————
Time(S)
What is the equation for weight
Weight(N)= Mass(Kg) x gravitational acceleration(MS -2)
What does gravity equal to
10
What is the typical speed of sound
330(m/s)
What is the typical speed of running
3(m/s)
What is the typical speed of walking
1.5(m/s)
A 1 kg book is lifted into the air 1m and then moved 2m to the right, how much work has been done
10
What happens to a spring after elastic limit is reach
Elastic deformation
Give 2 example of a scalar
Speed, area
Give 2 examples of a vector
Velocity, weight
What is momentum
The quantity of motion of a moving body, measured as a product of its mass and velocity
