Motion - Jamb Physics Past Questions and Answers

Question 26:

• JAMB 1984

A gun of mass 2.0kg fires a bullet of mass 16 x 10 ^-2kg due East. If the bullet leaves the nozzle of the gun with a velocity of 150ms^-1, what is the recoil velocity of the gun?

A. 150ms^-1 due West
B. 1.2 x 10^-4ms^-1 due West
C. 1.2ms^-1 due West
D. 1.2ms^-1 due East
E. 150ms^-1 due East

Question 27:

• JAMB 1984

Which of the following is a correct explanation of the inertia of a body?

A. Ability to overcome the earth's gravity
B. Reluctance to stop moving
C. Readiness to start moving
D. Reluctance to start moving and its readiness to stop moving once it has begun to move
E. Reluctance to start moving its reluctance to stop moving once it has begun to move

Question 28:

• JAMB 1984

A simple pendulum, 0.6m long, has a period of 1.5s. What is the period of a similar pendulum of 0.4m length in the same location?

A. \( 1.5 \frac{ \sqrt{2}}{3} \)s
B. \( 1.5 \frac{ \sqrt{3}}{2} \)s
C. 2.25s
D. 1.00s
E. 2.00s

Question 29:

• JAMB 1985

A simple pendulum with a period of 2.0s has its length doubled. Its new period is

A. 1.00s
B. 1.41s
C. 0.3s
D. 2.83s
E. 4.00s

Question 30:

• JAMB 1985

Which of the following types of motion are oscillatory? i.a diving board when used by a diver. ii. the motion of the balance wheel of a wrist watch. iii. the motion of the turn-table of a record player. iv. the motion of the center of a ten kobo piece as it rolls down an inclined plane. v. the motion of the needle of a D.C. ammeter into which a low A.C. current is passed

A. I and ii
B. I, ii and iii
C. Ii, ii and iv
D. I, ii and v
E. Iii, iv and iv