VECTOR ANALYSIS

Two like parallel forces of 4N and 8N are 15m apart. Find the distance in meters of the line of action of their resultant from 4N force.

• 10m
• 25m
• 20m
• 5m

P and Q are points (3, 1) and (7, 4) respectively. Find the unit vector along PQ.

• (0.6, 0.8)

• (-0.6, -0.8)

• (-0.8, -0.6)

• (0.8, 0.6)

Find the angle between (5i+3j) and (3i-5j).

• 45

• 180

• 0

• 90

• r and q are collinear.

• r and q are perpendicular.

• The magnitude of r is 52 units.

• The projection of r on q is 117 units

• 23.52°

• 24.50°

• 29.52°

• 29.82°

• 13°

• 87°

• 19°

• 110°

• 0.8, 0.6

• 0.8, -0.6

• 0.6, -0.8

• -0.8, 0.6