Waec Physics 2017 Past Questions and Answers

Question 6:

• WAEC 2017

A ball is projected horizontally from the top of a tower. Neglecting air resistance, which of the following statements about its motion is/are correct?
I. Vertical acceleration on the ball decreases as it falls
II. The vertical force on the ball remains constant
III. The vertical speed of the ball increases as it falls

A. I only
B. II only
C. I and II only
D. II and III only

Question 7:

• WAEC 2017

Two forces 100N and 60N act on an object of mass 10kg as illustrated in the diagram above. Neglecting friction, calculate the acceleration of the object.

A. 4.0\(ms^{-2}\)
B. 13.1\(ms^{-2}\)
C. 16.0\(ms^{-2}\)
D. 22.6\(ms^{-2}\)

Question 8:

• WAEC 2017

A body weighing 14N in air is partially immersed in water. If the mass of water displaced in the process is 200g, calculate the upthrust on the body. [g=10\(m/s^{2}\)]

A. 2.0N
B. 3.0N
C. 3.5N
D. 7.0N

Question 9:

• WAEC 2017

Which of the following processes is not a surface phenomenon?

A. Condensation
B. Evaporation
C. Photo Emission
D. Thermionic Emission

Question 10:

• WAEC 2017

A chemical balance is used for measuring

A. Volume
B. Mass
C. Thickness
D. Density