Question 391:

• JAMB 1986

Two objects, one having three times the mass of the other, are dropped at the same time from a tall building. When they are above the ground, the two objects will have the same

A. Momentum
B. Kinetic energy
C. Potential energy
D. Acceleration

Question 392:

• JAMB 1986

Which of the following is in a neutral equilibrium?

A. A heavy weight suspended on a string
B. A cone resting on its slant edge
C. A heavy-based table lamp
D. The beam of a balance in use

Question 393:

• JAMB 1986

A ball is thrown vertically into the air with an initial velocity u. What is the greatest height reached?

A. U2g
B. \(\frac{3u^2}{2g}\)
C. \(\frac{u^2}{g}\)
D. \(\frac{u^2}{2g}\)

Question 394:

• JAMB 1986

Which of the following assumptions is made in a simple pendulum experiment? the

A. Suspending string is inextensible
B. Bob has a finite size
C. Bob has a definite mass
D. Initial angle of oscillation must be large

Question 395:

• JAMB 1986

A constant force of magnitude F acts on an object of mass 0.04kg initially at rest at a point O. if the speed of the object when it has moved 50m from O is 500ms^-1, what is the value of F?

A. 0.4N
B. 100.0N
C. 250.0N
D. 1000.0N