Physics Past Questions and Answers

Which of the following substances lowers the surface tension of water?

An object of volume 400cm³ and 2.5gcm^-3 is suspended from a spring balance with half its volume immersed in water. Determine the reading on the spring balance. (Density of water = 1gcm^-3)

The diagram given illustrates a force-distance graph for the motion of a wooden block. Determine the work done on the block when moved through a distance of 5m.

The two person of a body undergoing a uniformly accelerated motion are (10s, 10ms^-1) and (30s, 50ms^-1). On the velocity-time graph pf the body.

At a birthday party, the celebrant pops a corked fruit wine. If the cork shoots out of the bottle at an angle of 40^o to the horizontal and travels a horizontal distance of 4.50m in 1.25s. Calculate the initial speed of the cork.