forces and motion.

Question 1

how are forces acting on an object when stationary are?

Answer 1

equal and opposite.
in equilibrium.
balanced.

Question 2

what sort of diagram do you use if your asked to label a diagram for these types of questions?

Answer 2

free body diagram which is off the object in the space surrounding it- don’t draw the arrows on the object.

Question 3

what is newtons 1st law?

Answer 3

objects continue to move with a constant speed and direction (constant velocity) unless acted upon by a resultant force (non-zero.)

Question 4

if 500N is to the left and there is 450N to the right what is the size and direction of the resultant force?

Answer 4

50 N to the left.

Question 5

how can distance be described?

Answer 5

how far an object moves.
scalar quantity ( it only has size.)

Question 6

how can displacement be described?

Answer 6

measures how far we have travelled in a given direction.
vector quantity (it has both direction and size.)

Question 7

what are the average speeds for: walking.
running.
cycling.

Answer 7

1.5m/s.
3m/s.
6m/s.

Question 8

how can speed be described?

Answer 8

how fast an object moves.
doesn’t involve direction (scalar quantity.)

Question 9

how can velocity be described?

Answer 9

how fast an object moves in a given direction?
vector quantity.

Question 10

formula involved =?

Answer 10

velocity= displacement/ time.
V= S/T.