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.

Which of the following quantities are units of momentum? (there could be more than one correct choice.) a)n m b) kg s/m c) kg m/'s d)n-s 12 points] e) kg m2/s2

This question is worth 54 points ! rock falls from a ledge to the ground what energy conversion occurs during this process a potential to kinetic b kinetic to potential c thermal to mechanical d chemical to mechanical

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