JAMB Physics Past Questions & Answers - Page 240

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

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

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

Which of the following statements are true about the spring balance and the chemical balance?

i. both are used to measure the mass of an object.
ii. either of them may be used to measure the weight of an object.
iii. the spring balance works on the principle of Hooke's law while the chemical balance works on the principle of moments.
iv. a change in gravity does the readings of a spring balance but not that of a chemical balance.

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