**Answer:**

given , v = 300 km/hr; distance d = 1500 km; then time t = d/v = 1500/300 = 5 hrs

**Explanation:**

Explanation is in a file

bit.ly/3a8Nt8n

**Answer:**

** Torque = 1191.68 N-m**

**Explanation:**

**Given data **

mass m = 76 kg

standingdistance r = 1.6 m

**Solution**

we get here torque that si express as

torque = force × distance ................1

torque = r × F sin(theta)

and we know that

F = mg .........2

and g = 9.8 m/s²

put here value in equation 1 we get

Torque = 76 × 1.6 × 9.8 × sin(90)

** Torque = 1191.68 N-m**

**Answer:**

This is a PERT (Program Evaluation and Review Technique) question and the expected duration of completing this activity can be solved using the formula below.

Pert Expected Duration Estimate = ║Optimistic Duration + (4 x Most Likely Duration) + Pessimistic Duration║/6.

15 days = Most likely Activity Duration.

10 days = Optimistic Activity Duration

20 days = Pessimistic Activity Duration

Substituting these values, we will have

(10 +(4 X 15) +20)/6. The pert estimate is therefore calculated as 15 days

**The expected duration of completing this activity = 15 days.**