Motion - Jamb Physics Past Questions and Answers

Question 36:

• 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 37:

• 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 38:

• JAMB 1986

A 1000kg elevator is descending vertically with an acceleration of 1.0ms^-2, if the acceleration due to gravity is 10ms^-2, the tension in the suspending cable is

A. 1.0N
B. 10.0N
C. 9000.0N
D. 11 000N

Question 39:

• JAMB 1987

A jet engine develops a thrust of 270Ns when the velocity of the exhaust gases relative to the engine is 300ms^-1. What is the mass of the material ejected per second?

A. 81.00kg
B. 9.00kg
C. 0.90kg
D. 0.09kg

Question 40:

• JAMB 1987

An elevator of mass 4800kg is supported by a cable which can safely withstand a maximum tension of 60 000N. The maximum upward acceleration the elevator can have is

A. 2.5ms^-2
B. 5.0ms^-2
C. 7.5ms^-2
D. 10.0ms^-2