WAEC Past Questions and Answers - Page 3463

17,311.
17,312.

A body accelerates uniformly from rest at 2ms-2. Calculate the magnitude of its velocity after travelling 9m

A.

4.5 ms-1

B.

6.0ms-1

C.

18.0-1

D.

36.0-1

Correct answer is B

v = \(\sqrt{U^2} + 2as = \sqrt{0^2} + 2 \times 2 \times 9 = 6\)m/s

17,313.

A body moving with an initial velocity U accelerates until it attains a velocity of V within a time t. The distance, s covered by the body is given by the expressions

A.

s = (\(\frac{v - u}{2}\))t

B.

s = (\(\frac{v + 2u}{2}\))t

C.

s = (\(\frac{v + u}{2}\))t

D.

s = (\(\frac{2v + u}{2}\))t

Correct answer is C

No explanation has been provided for this answer.

17,314.

Which of the following groups of organisms do not have members that can be called autotrophs?

A.

Protists

B.

Mosses

C.

Chlorophyta

D.

Fungi

Correct answer is D

No explanation has been provided for this answer.

17,315.

Soil permeability refers to 

A.

how easily water passes through the soil

B.

the proportion of air in the soil

C.

the proportion of water the soil holds

D.

how well water rises up the soil

Correct answer is A

No explanation has been provided for this answer.