Motion - Jamb Physics Past Questions and Answers

Question 51:

• JAMB 1990

A particle of mass M which is at rest splits up into two. If the mass and velocity of one of the particles are m and v respectively, calculate the velocity of the second particle

A. \(\frac{mv}{M}\)
B. \(\frac{Mv}{M - m}\)
C. \(\frac{mv}{M + m}\)
D. \(\frac{mv}{M - m}\)

Question 52:

• JAMB 1990

A sonometer wire of length 100cm under a tension of 10N, has a frequency of 250Hz. Keeping the length of the wire constant, the tension is adjusted to produce a new frequency of 350Hz. The new tension is

A. 5.1N
B. 7.1N
C. 14.0N
D. 19.6N

Question 53:

• JAMB 1990

What is the average velocity of the sprinter whose velocity time graph is as shown above

A. 85.0ms^-1
B. 17.0ms^-1
C. 8.5ms^-1
D. 1.7ms^-1

Question 54:

• JAMB 1991

A small metal ball thrown vertically upwards from the top of a tower with an initial velocity of 20ms^-1. If the ball took a total of 6s to reach ground level, determine the height of the tower [g = 10ms^-2]

A. 60m
B. 80m
C. 100m
D. 120m

Question 55:

• JAMB 1991

An object moves with uniform speed round a circle. Its acceleration has

A. Constant magnitude and constant direction
B. Constant magnitude and varying direction
C. Varying magnitude but constant direction
D. Varying magnitude and varying direction