Forces And Movement Flashcards
A force can
Push, pull and turn an object.
Force Vector arrows show the
Size and direction of a force. LOOK IN BOOK FOR EXAMPLES.
Forces can change
The shape, speed and direction if an object.
How to use a newton balance to measure force.
Make sure the pointer is at 0.
Hang the hook onto the top of the thing you are measuring.
Hang the thing you are measuring in the air by the balance.
Read measurement at eye-level
Weight is a… and the ………. on an object
Force Gravitational pull.
Formula for calculating weight from mass
W = mg
G MEANS GRAVITATIONAL FIELD STRENGTH
On earth, g has the approximate value of
10 N/kg
On different planets, weight will…. but mass will…
Vary. Stay same.
How to sketch a graph which illustrates the relationship between extension of a spring and the force applied.
ITS EASY OK.
HOOKES LAW
The extension of a spring is directly proportional to the force applied until the spring no longer obeys hooks law.
Elastic limit is
the maximum extent to which a solid may be stretched without permanent alteration of size or shape.
V bar = d/t
AVERAGE SPEED
D = vt
DISTANCE TRAVDLED
How to measure instantaneous speed.
Light gate.
Acceleration is
The measure of the change in the speed of an object in a given time.
MEASURE RELATIVE FRICTION OF DIFFERENT SURFACE MATERIALS.
Lol.
The movement of air over a surface causes
FRICTION.
Air friction is usually called.
Air resistance.
Describe and explain situations in which attempts are made to increase or decrease friction.
Ok.
The period of a pendulum …. as the …. of the ………..
Increases length. Pendulum increases.
INVESTIGATION
Rember?
