Question 526:

• JAMB 1989

Which of the following is a set of vectors?

A. Force, mass and moment
B. Acceleration, velocity and moment
C. Mass, weight and density
D. Mass, volume and density

Question 527:

• JAMB 1989

Which of the following is a set of vectors?

A. Force, mass and moment
B. Acceleration, velocity and moment
C. Mass, weight and density
D. Mass, volume and density

Question 528:

• JAMB 1989

The magnitude of the resultant of two mutually perpendicular forces, F₁ and F₂ is 13N, if the magnitude of F₁ is 5N, what is the magnitude of F₂?

A. 2.6N
B. 6.0N
C. 12.0N
D. 18.0N

Question 529:

• JAMB 1989

Two points on a velocity time-graph have coordinates (5s, 10ms^-1) and (20s, 20ms^-1). Calculate the mean acceleration between the two points

A. 0.67ms^-1
B. 0.83ms^-1
C. 1.50ms^-1
D. 2.00ms^-1

Question 530:

• JAMB 1989

A thin film of liquid is trapped between two glass plates. The force required to pull the plates apart will increase if the

A. Surface tension of the liquid is reduced
B. Perpendicular distance between the plates is increased
C. Area of the liquid surface in contact with the plates is increased
D. Pressure of the air is decreased