Given the vectors: v1 = 3m/s ˆi + 4m/s ˆj and v2 = 2m/s ˆi + 1m/s ˆj, calculate the following: (a) v1 + v2

(b) v1 − v2

(c) v2 − v1

(d) 3 ∗ v1 + 2 ∗ v2

(e) −4 ∗ v1 + 2 ∗ v2

(f) 0.5 ∗ v1 − 0.6 ∗ v2

Anyone please, thanks.

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?