Force

Anything that causes an object to change its position or velocity is called
1. a force
2. a moment
3. distance
4. mass
The unit of force is the
1. newton
2. metre per seconds
3. m/s²
4. metre
The apparatus shown is used for measuring force. What is this called?
1. Newtonmeter
2. Metre stick
3. Pendulum
4. Multimeter
The person shown in the picture is associated with discovering gravity when an apple is said to have fallen on his head. Who is this person?
1. Isaac Newton
2. Steve Jobs
3. Alexander Graham Bell
4. Albert Einstein
We meet many different types of force every day. Some of these are shown in the list below. However, one of these is NOT a force. Which one is it?
1. Speed
2. Push
3. Friction
4. Pull
What type of force occurs when the brakes are applied on a bike?
1. Friction
2. Stretching
3. Electric
4. Magnetic
A light bulb is attached to the ceiling by a cord. What type of force is there in the cord?
1. Tension
2. Friction
3. Magnetic
4. Push
A tennis ball is dropped to the ground as shown. What downward force is acting on the ball as it is falling?
1. Gravity
2. Push
3. Stretch
4. Magnetic
What type of force is associated with a spring, an elastic band and a bungee jump cord?
1. Stretching
2. Electrical
3. Twisting
4. Pushing
The force of gravity acting on an object is also called its
1. weight
2. mass
3. speed
4. acceleration
The weight of a body varies from location to location. Where would the weight of the body be least?
1. In space
2. On the moon
3. At sea level on earth
4. On top of Mount Everest
The weight of a body varies from location to location. Where would the weight of the body be greatest?
1. At sea level on earth
2. In space
3. On the moon
4. On top of Mount Everest
A man will weigh more at the North Pole than he will at the equator because
1. the pull of the earth is greater at the poles.
2. he is wearing more clothes at the North Pole.
3. his mass is greater at the North Pole
4. the lower temperature at the North Pole causes him to weigh less.
An astronaut on the moon will weigh one sixth of his weight on earth. Why is this?
1. The force of gravity on the moon is one sixth that of the force of gravity on earth.
2. There is no atmosphere on the moon.
3. There is no force of gravity on the moon.
4. The astronaut has less mass on the moon.
Mass and weight are not the same, but they are related.
A book has a mass if 1.2 kilograms. What is its weight?
1. 12 newtons
2. 1.2 newtons
3. 0.12 newtons
4. 0.012 newtons
A woman stands on a weighing scale which reads 650 newtons.
What is her mass?
1. 65 kg
2. 6.5 kg
3. 650 kg
4. 0.65 kg
A boy is cycling along a road. When he applies the brakes, which one of the following forces occurs between the brake pads and the wheels.
1. Friction
2. Stretching
3. Gravity
4. Magnetic
What force is responsible from keeping us slipping as we walk?
1. Friction
2. Stretching
3. Magnetic
4. Tension
The force which opposes motion between two bodies is
1. friction
2. stretching
3. gravity
4. magnetic
Which one of the following is a disadvantage of friction?
1. It wears away the surfaces in contact.
2. It stops a car from sliding off the road.
3. It helps a person to write clearly.
4. It keeps a runner from slipping.
Which one of the following is an advantage of friction?
1. It holds your feet on the ground while you walk.
2. Friction between an aircraft and the air causes extra fuel to be used.
3. In a car, it wears out the brake pads.
4. It requires extra effort to push a box across a floor.
Synovial fluid is a lubricant used to reduce friction.
Where would you find synovial fluid?
1. In the joints of our skeleton.
2. In the brakes of a car.
3. Between the moveable metal parts of a car engine.
4. In an aircraft to reduce drag.
A student investigating the effect of friction pulled a wooden block over four different types of surface. These surfaces are listed below.
Which one of these surfaces would require the least force to make the block move?
1. Oiled surface
2. Untreated wooden surface
3. Surface covered with smooth sand paper
4. Surface covered with rough sand paper
A student investigated the relationship between the weight of a block and the friction between it and the surface.
As he added weights to the block, he found that the force needed to move the block
1. increases
2. decreases
3. stays the same
A group of students investigated the relationship between the extension of a spring and the force causing it.
They plotted a graph of extension against force.
Which one of the following graphs are they most likely to obtain?
A group of students investigated the relationship between the extension of a spring and the force causing it.
They plotted a graph of extension against force as shown.
What force causes an extension of 2 cm?
1. 1 newton
2. 4 newton
3. 8 newton
4. 6 newton
A well known law states "The extension of a spring is proportional to the force causing the extension" is known as
1. Hooke's Law
2. Boyle's Law
3. Ohm's Law
4. Law of the Lever
The resistance to movement of one surface over the other is known as
1. friction
2. weight
3. power
4. speed
Friction between two bodies can often be a problem. In such cases friction can be reduced by
1. lubricating the surfaces in contact.
2. increasing the roughness of the surfaces.
3. heating the surfaces in contact.
4. increasing the area of contact between the surfaces.
A pupil used the apparatus shown in the diagram to investigate the relationship between the force applied and the extension produced in the spring by that force.
Pointer, P, was used to read the scale.
Weights were added to the pan to apply forces to the spring.
The graph was recorded from the results.
A stone produced an extension of 14 cm with this spring.
What is the weight of this stone?
1. 8 N
2. 12 N
3. 16 N
4. 7 N
What type of force causes a stone to fall?
1. Weight
2. Electric
3. Magnetic
4. Friction
A stone has a mass of 2 kilograms.
What is the weight of this stone?
1. 20 newtons
2. 0.2 newtons
3. 2 newtons
4. 200 newtons
Friction can be useful when driving a car.
Select three ways from the list below in which friction is useful in cars.
1. Traction keeping the car on the road.
2. Braking to slow down the car at bends.
3. Seatbelt to keep passengers from sliding around.
4. Rear view mirror to see behind.
Friction can be useful when driving a car.
How may friction be reduced in a car?
1. Keep the engine topped up with oil.
2. Check headlights once a week.
3. Don't let the diesel/petrol fall too low in the tank.
4. Use the rear view mirror when turning.
After what famous scientist is the unit of force called?
1. Isaac Newton
2. Blaise Pascal
3. Albert Einstein
4. Robert Hooke
A student carried out an investigation to examine the relationship between the extension (increase in length) of a spring and the force applied to it.
The apparatus is shown in the diagram.
The results obtained were put in the form of a graph as shown.
Study the graph and determine what force causes an extension of 6 cm in the spring.
1. 3 newtons
2. 12 newtons
3. 9 newtons
4. 6 newtons
Snails produce mucus to help them move along the ground.
How does the mucus help snails move?
1. Mucus reduces friction.
2. Mucus is cold.
3. Mucus leaves a trail.
4. Mucus makes the snail lighter.
A student puts a block of wood on a table. She wants to measure the force needed to move the block.
Which one of the following instruments does she use?
Which of these instruments measures force?
1. Spring balance
2. Compass
3. Trundle wheel
4. Vernier callipers
Before using a spring balance (newtonmeter) in an experiment, one must check for which one of the following:
1. Zero error
2. Zero gravity
3. Terminal velocity
4. Error of parallax
Gravity is a very strong force.
1. FALSE
2. TRUE
The force that attracts us towards the earth is called
1. gravity
2. magnetism
3. friction
4. buoyancy
Weight is measured in
1. newtons
2. kilograms
3. metres per second
4. metres
Most weighing scales do not tell us what our weight actually is.
Instead, they give us our
1. mass
2. height
3. density
4. growth
On earth, the average value for acceleration due to gravity is
1. 9.8
2. 98
3. 1
4. 100
On the moon, the average value for acceleration due to gravity is
1. 1.6
2. zero
3. 16
4. infinite
A calculator has a weight of 2 newtons.
What is its mass?
1. 200 grams
2. 20 grams
3. 2 grams
4. 0.2 gram
Friction between two objects is reduced by using
1. a lubricant
2. a spring balance
3. a rough surface
4. a vacuum
Friction between parts in a car engine is best reduced by
1. motor oil
2. petrol
3. brake fluid
4. detergent
This device traps a cushion of air beneath itself and then floats along on top of the air. It can travel over land and water. What is it?
1. A hovercraft
2. A submarine
3. A helicopter
4. A submersible
Swimmers are slowed down by the friction between their body and the water. This type of friction is called
1. drag
2. push
3. squash
4. compression
In Formula One racing, this helps push the car's tyres onto the track and improve cornering forces, and minimises drag. Name it.
1. Downforce
2. Upthrust
3. Lubrication
4. Friction
This force of nature causes certain metals to attract or repel each other.
1. Magnetism
2. Gravity
3. Electricity
4. Friction
The force that prevents a steel ship from sinking is called
1. buoyancy
2. magnetism
3. gravity
4. friction
"For every action, there is an equal and opposite reaction."
This is known as
1. Newton's Third Law
2. Newton's Second Law
3. Newton's First Law
4. the Law of Conservation of Mass
A small stone has a weight of 1.2 N in air, and weighs 0.95 N in water.
What is the upthrust (buoyancy force) exerted by the water on the stone?
1. 0.25 N
2. 2.15 N
3. 0.95 N
4. 1.14 N
Most helicopters have a main rotor and a tail rotor.
The function of the tail rotor is
1. to prevent the helicopter from spinning around
2. to balance the weight of the helicopter
3. to create a greater upthrust on the helicopter
A group of students performed an experiment to investigate the relationship between the extension of a spring and a weight hanging on it.
What were the variables?
1. Extension and force
2. Mass and extension
3. Length and velocity
4. Weight and mass
The force that causes aeroplanes to fly and Frisbees to glide is called
1. lift
2. drag
3. friction
4. weight

Force

Multiple Choice Quiz