- Define velocity and state its S.I unit

- rate of change of distance. S.I.unit Newton(N)
- speed over time. S.I unit is kilometer(km)
- rate of change of displacement. S.I unit is metre per second squared ( ms
^{-1}) - rate of change of acceleration. S.I.unit (ms
^{-2})

- Calculate the pressure exerted on a surface by a cylindrical metal of mass 10 kg when the corresponding area of contact is 0.5 m
^{2}- 200Pa
- 20Pa
- 5Pa
- 50Pa

- A motor car of mass 1000kg travelling at 90kmhr
^{-1}is brought to rest by applying brakes in 100m. Kinetic energy attained by the car is;- 4,050,000 J
- 312,500J
- 90,000J
- 100,000J

- A body of mass 0.5kg is thrown vertically upwards with a velocity of 60ms
^{-1}, find the maximum height reached.- 3600m
- 360m
- 18000m
- 900m

- Which of the following machines is a third class lever?

- a pair of scissors
- human arm
- wheel barrow
- nut cracker

- The energy changes in the working of an electric cell are

- electrical to mechanical
- chemical to electrical
- thermal to chemical
- chemical to light

- The stability of a bus is reduced when a heavy load is placed on its roof rack because

- the total weight is increased
- the pressure upon the tyre is increased
- the centre of gravity is lowered
- the centre of gravity is raise

- A body P of mass 4kg moving with a velocity of 20ms
^{-1}, collides head on collision with another body Q of mass 6kg moving with a velocity of 10ms^{-1}. If the bodies stick and move together after collision, calculate their common velocity.

- 20 ms
^{-1} - 14ms
^{-1} - 2 ms
^{-1} - .20ms
^{-1}

- 20 ms
- Which of the following is not true about a body moving with constant velocity?

- Its acceleration is zero
- Its momentum is constant
- Its kinetic energy is constant
- there is a resultant force on it.

- A student of mass 40 kg runs up stair case of 40 steps in 10 seconds. If the height of each step is 15cm, calculate the average rate of change of potential energy of the body.

- 240W
- 600W
- 1600W
- 2400W

- A system of pulleys is used to raise a load of 900N through 2m by an effort of 200N. If the efficiency of the system is 75%, what is the distance moved by the effort?

- 0.3m
- 6.0m
- 6.8m
- 12.0m

- The thickness of a table can accurately be measured using a

- tape measure
- metre rule
- vernier caliper
- micrometer screw gauge

- Copper of mass 18g has a volume of 2cm
^{3}, what is the mass of copper of volume 3cm^{3}?

- 27g
- 27000Kg
- 54g
- 54000Kg

- In Brownian motion experiment, the

- size of particles are found to increase the motion
- smoke cell has vacuum within it
- smoke particles are seen moving about with uniform velocity
- motion observed is caused by the air molecules colliding with the smoke particles

- The following are equations of uniformly accelerated motion except

- V
^{2}=U^{2}+ 2as - S = ut + ½at
^{2} - S = 2ut + ½at
^{2} - v = u+at

- V
- A load of 8N stretches a spring by 0.4cm, Calculate the extension when a load of 5N is applied

- 0.0025cm
- 1.000cm
- 4.000cm
- 2.000cm

- A machine is

- a device that makes work
- a device that does no work
- a device that simplifies work
- a device that produces work

- A spiral spring has a length of 22cm when unstretched. When a mass of 2kg is hung on it, the spring extends to a length of 27.4cm. Find the force needed to produce an extension of 10mm.

- 37.00N
- 5.40N
- 3.70N
- 0.37N

- A cylindrical tank has a radius of 70cm and a height of 2m.The capacity in litres of this tank when full of water is

- 140 litres
- 30.8x10
^{-3}litres - 30,800,000litres
- 14000litres

- The rate at which distance covered by a body changes with time is known as

- speed
- velocity.
- acceleration
- displacement.

- The speed with which molecules move about inside a gas depends on their

- mass and temperature
- enclosure and mass
- area and temperature
- volume and area

- A boy whose weight is 600N runs up a flight of stairs 10m high in a time of 12seconds.The average power he develops in watts is
- 720
- 500
- 5000
- 72

- Which of the following is not a store of chemical energy?

- microphone
- a battery
- Gas
- Food

- A piece of anthracite has a volume of 15cm
^{3}and a mass of 27g. What is its density in kgm^{-3}?

- 1800 kgm
^{-3} - 1.8 kgm
^{-3} - 405 kgm
^{-3 } - 0.56 kgm
^{-3}

- 1800 kgm
- A burette was filled with a liquid up to the 21.5cm
^{3}mark. 100 drops of liquid was allowed into a beaker below. If the final level of the liquid inside the burette is 26.5 cm^{3}, what is the volume of each drop of the liquid?

- 5.0 cm
^{3} - 50cm
^{3 } - 1.23 cm
^{3} - 0.05 cm
^{3}

- 5.0 cm
- The weight of a body on earth is 800N. What is the weight of the same body on a different planet, if its acceleration due to gravity is 1/5
^{th}to that on earth.- 120N
- 160N
- 1600N
- 3200N

- The most suitable instrument for measuring the outer diameter of a test tube is

- a ruler
- a tape measure
- Vernier calipers
- a micrometer screw gauge

- The slope of a velocity – time graph is the

- speed of the body
- velocity of the body
- acceleration of the body
- distance traveled by the body

- A car of mass 12000kg moving with a constant velocity of 60ms
^{-1}is retarded uniformly to rest in 12s. Calculate the retarding force.

- (1200x12)N
- (1200x5)N
- (1200x10)N
- (1200x60)N

- A body of mass 20kg moves with a uniform velocity of 4ms
^{-1}from rest. Find its momentum

- 5 kgms
^{-1} - 80kgms
^{-1} - 160kgms
^{-1} - 320kgms
^{-1}

- 5 kgms
- Calculate the effort when a load of 72N is raised using a block system of five pulleys and efficiency 80.

.

- 11.52 N
- 18N
- 57.6N
- 288N

- Three of the fundamental physical quantities are;

- length , time and weight
- volume, temperature, pressure
- Density mass and time
- length, time and mass

- When water spreads on a glass plate the force between its molecules and glass molecules are due to

- Adhesion
- Surface tension
- Cohesion
- Viscosity

- A body of mass 25kg falls freely from a height of 10m to the ground. Calculate its velocity as it this the ground.

- 4.47 ms
^{-1} - 14.14ms
^{-1} - 10.0ms
^{-1} - 2500ms
^{-1}

- 4.47 ms
- The particles, in a solid at room temperature are

- close together and moving at random
- far apart and moving at random
- close together and stationary
- close together and vibrating

- An elastic wire extends by 0.5cm when a load of O.4N hangs from it. What additional load will be required to cause a further extension of l.5cm?

- 1.2 N
- 0.8 N
- 8.0 N
- l.0 N

- A single fixed pulley with an efficiency of 75% is used to raise a pile of 10 books each weighing 45N. Calculate the effort applied
- 60N
- 337.5N
- 600N
- 75N

- A small metallic object may float on clean water, but sinks when some detergent is added to the water, due to the detergent;
- making water surface slippery
- lowering the surface tension of water
- reducing the density of water
- increasing the adhesive force between the metal and water molecules

- Which of the following are vector quantities?
- Density, velocity and force
- Magnetic field, weight and velocity
- Velocity, time and displacement.
- Magnetic field, mass and acceleration

- Which of the following factors affect the strength of surface tension?
- Adhesion and cohesion
- Temperature and pressure
- Impurities and pressure
- Temperature and impurities