Question

2. You drop a stone from a clitt. WHICIltqu describes the displacement of the stone? (12) (a) ad, =--g(At)" 2 y 2g 3. A student walks 50.0 m [W 60.0° N]. Which pair of displacements equals the east-west and north-south displacements? (1.3) KU A (a) 30.0 m [W], 40.0 m [N (b) 40.0 m [W], 30.0 m [N] (c) 25.0 m [W], 43.3 m [N (d) 43.3 m [W], 25.0 m [N] A train approaches a rail yard with a velocity of 4. 1 mls [Wl A fter 95 s the train has a velocity

Answer 1

2) As the question does not say anything about initial velocity, it is okay to assume that stone is dropped from rest. so initial velocity is zero, then displacement equation is

d = -1/2gt² ..

3) Here the displacements will be

50*sin 60 and 50 * cos 60

43.3 m and 25 m

what does ( W 60^o N ) means ??

I think its telling that direction 60 degree north from west.