The product PV where P is pressure and V is volume has the same unit as?
A. power B. work C. acceleration D. impulse E. force Correct Answer: Option B – work Explanation P = N/m² V = m PV = Nm unit of work
Power is defined as the?
A. capacity to exert a force B. product of force and time C. product of force and distance D. ability to do work E. energy expended per unit time Correct Answer: Option E – energy expended per unit time
An orange fruit drops to the ground from the top of a tree 45m tall. How long does it takes to reach the ground? (g = 10m/s²)
A. 3.0s B. 4.5s C. 6.0s D. 7.5s E. 9.0s Correct Answer: Option A – 3.0s Explanation s = ut + ½gt² 45 = 0 + 5t² t = 3s
The diagram below shows the position of a simple pendulum set in motion. At which of the positions does the pendulum have maximum kinetic energy?
A. 5 B. 4 C. 3 D. 2 E. 1 Correct Answer: Option C – 3Products
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