A body of mass 5kg moving with a velocity of 10ms^-1 collides with a stationary body of mass 6kg. If the two bodies stick together and move in the same direction after their collision, calculate their common velocity

• A. 4.55ms^-1
• B. 12.00ms^-1
• C. 30.00ms^-1
• D. 50.00ms^-1

Which of the following statements about boiling and evaporation at atmospheric pressure is correct?

• A. evaporation and boiling of water take place at 100°
• B. evaporation of water takes place at a temperature greater than 100°C, while boiling takes place at 100°C
• C. evaporation of water takes place at 100°C while boiling takes place at a higher temperature
• D. boiling takes place at 100° while evaporation my take place at temperatures lower than 100°C

Fuel was consumed at a steady rate of 5.0 x 10^-2kg per second in a rocket engine and ejected as a gas with a speed of 4 x 10³ms^-1. Determine the thrust on the rocket

• A. 20N
• B. 80N
• C. 200N
• D. 800N

An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of the liquid increases uniformly at the rate of 2.5^oC per second, calculate the specific heat capacity of the liquid. [Assume no heat is lost]

• A. 1100Jkg^-1K^-1
• B. 320Jkg^-1K^-1
• C. 200Jkg^-1K^-1
• D. 176Jkg^-1K^-1

(a) Define elastic limit

(b) State Hookes laws of elasticity

Which of the following quantities has the same unit as energy?

• A. power
• B. work
• C. force
• D. momentum

A ball is projected specific latent heat of ice = 3.4 x 10\(^{2}\) Jg\(^{-1}\) horizontally from a height of 20m above the ground specific heat capacity of water = 4.2 Jg\(^{-1}\) K\(^{-1}\) with an initial velocity of 0.4ms\(^{-1}\). Calculate the horizontal distance moved by the ball before hitting the ground. [g = 10ms\(^{-1}\)]

The lower and upper fixed point of a thermometer are 30mm and 180mm respectively. Calculate the temperature in degrees Celsius when the thermometer reads 45mm

• A. 10.0^oC
• B. 15.0^oC
• C. 20.0^oC
• D. 30.0^oC

Which of the following statements explains lost volt in an electric circuit? The

• A. total p.d from a source to maintain a flow of current through the circuit as well as the source
• B. p.d to drive current through the circuit component except the source
• C. p.d across all external components connected to the source of electricity
• D. p.d across the internal resistance of the cell

Masses,m¹ and m² at the 20-cm and 65-cm marks respectively of a uniform metre rule freely suspended at its centre of gravity. If the metre rule balances horizontally, determine the ratio m² : m¹

• A. 2 : 1
• B. 3 : 3
• C. 2 : 3
• D. 1 : 2