Waec Physics Past Questions For Year 1993
Question 6
A body moves along a circular path with uniform angular speed of 0.6 rad s-1 and at a constant speed of 3.0ms-1. Calculate the acceleration of the body towards the centre of the circle.
- A. 25.0ms-2
- B. 5.4 ms-2
- C. 5.0ms-2
- D. 1.8 ms-2
- E. 0.2ms-2
Question 7
If the temperature of water is gradually increased from 0o to 4oC, the density of the water within this range
- A. increases for a while and then decreases
- B. decreases for a while and then increases
- C. increases gradually
- D. decreases gradually
- E. remains the same
Question 8
How far will a body move in 4 seconds if uniformly accelerated from rest at the rate of 2 ms-2?
- A. 32m
- B. 24m
- C. 16m
- D. 1.2m
- E. 5m
Question 9
An object is projected with a velocity of 100 ms-1 from the ground level at an angle 0 to the vertical. If the total time of flight of the projectile is 10 s, calculate θ. (g = 10 ms-2).
- A. 0o
- B. 30o
- C. 45o
- D. 60o
- E. 90o
Question 10
A block of material of volume 2 X 10\(^{-5}\)m\(^3\) and density 2.5 x 10\(^3\) kgm\(^{-3}\) is suspended from a spring balance with half volume of the block immersed in water. What is the reading of the spring balance? (Density of water =1.0x10\(^3\) kg m\(^{-3}\) g = 10 ms\(^{-2}\)).
- A. 0.10N
- B. 0.25N
- C. 0.30N
- D. 0.40N
- E. 0.50N
