A ball is projected horizontally from the top of a hill with a velocity of 20m/s. If it reaches the ground 4 seconds later, what is the height of the hill? (g = 10m/s²)
A. 20m B. 40m C. 80m D. 160m E. 200m Correct Answer: Option C – 80m Explanation Initial horizontal velocity = 20m/s Initial vertical velocity = 0 s = ut + ½gt² = 0 x 5 x 4² = 80m
A body moves with a constant speed but has an acceleration. This process if it?
A. moves in a straight line B. moves in a circle C. is oscillating D. is in equilibrium E. has a varying acceleration Correct Answer: Option B – moves in a circle
Which of the following is a fundamental quantity _______?
A. speed B. density C. length D. impulse E. energy Correct Answer: Option C – length
An electric string of length l is elastically stretched through a length e by a force F. The area of cross-section of the string is A and its Young’s modulus is E. Which of the following expressions is correct?
A. F = EA/eI B. F = EAI/e C. F = EAe/l D. F = EAe Correct Answer: Option C = F = EAe/l Explanation E = Stress/Strain = F/A/e/L E = FL/AE; F = EAe/LProducts
-
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.
-
Co-Ownership Structures and Land Acquisition Methods in Nigeria
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.
-
Rights in Community Land and Fundamental Land Concepts in Nigeria
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.
-
Customary Land Control and the Origins of Nigeria's Land Use Act
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.
-
Land Ownership Principles and Transaction Laws in Nigeria
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.