Question 341:

• 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

Question 342:

• JAMB 1985

If a car starts from rest and moves with a uniform acceleration of 10ms^-2 for ten seconds, the distance it covers in the last one second of its motion is

A. 95m
B. 100m
C. 500m
D. 905m
E. 1000m

Question 343:

• JAMB 1985

A block of mass 2.04kg resting on a smooth horizontal plane is acted upon simultaneously by two-forces, 10N due North and 10N due East. The magnitude of the acceleration produced by the force on the block is

A. 0.10ms^-2
B. 7.07ms^-2
C. 10.00ms^-2
D. 14.10ms^-2
E. 20.00ms^-2

Question 344:

• JAMB 1985

A metal block of mass 5kg lies on a rough horizontal platform. If a horizontal force of 8N applied to the block through its center of mass just slides the block on the platform, then the coefficient of limiting friction between the block and platform is

A. 0.16
B. 0.63
C. 0.80
D. 1.60
E. 2.00

Question 345:

• JAMB 1985

Which of the following is NOT a force?

A. Friction
B. Tension
C. Upthrust
D. Weight
E. Impulse