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WorksheetsAS Level
Total questions: 20
Worksheet time: 3600secs
What is meant by the weight of an object?
the gravitational field acting on the object
the gravitational force acting on the object
the mass of the object multiplied by gravity
the object’s mass multiplied by its acceleration
A cyclist is riding at a steady speed on a level road. According to Newton’s third law of motion, what is equal and opposite to the backward push of the back wheel on the road?
the force exerted by the cyclist on the pedals
the forward push of the road on the back wheel
the tension in the cycle chain
the total air resistance and friction force
A force F is applied to a freely moving object. At one instant of time, the object has velocity v and acceleration a. Which quantities must be in the same direction?
a and v only
a and F only
v and F only
v, F and a
Which is not one of Newton's laws of motion?
A body continues in a state of rest or of uniform motion in a straight line unless acted upon by some external force
If body A exerts a force on body B, then body B exerts an equal and oppositely-directed force on body A.
The total momentum of a system of interacting bodies remains constant, providing no external force acts.
The rate of change of momentum of a body is directly proportional to the external force acting on the body and takes place in the direction of the force.
A mass accelerates uniformly when the resultant force acting on it ....
is proportional to the displacement from a fixed point
increases uniformly with respect to time
is constant but not zero.
is zero.
Which of the following is a statement of the principle of conservation of momentum?
Momentum is the product of mass and velocity.
In an elastic collision, momentum is constant.
The momentum of an isolated system is constant.
The force acting on a body is proportional to its rate of change of momentum.
In perfectly elastic collisions between two atoms, it is always true to say that ....
the initial speed of one atom will be the same as the final speed of the other atom.
the relative speed of approach between the two atoms equals their relative speed of separation.
the total momentum must be conserved, but a small amount of the total kinetic energy may be lost in the collision.
whatever their initial states of motion, neither atom can be stationary after the collision
Which statement describes the mass of an object?
the force the object experiences due to gravity
the momentum of the object before a collision
the weight of the object as measured by a balance
the resistance of the object to changes in motion
Their initial speeds are uX and uY respectively. After the collision they move apart with speeds vX and vY respectively. Their directions are shown. Which equation is correct?
uX + uY = vX + vY
uX + uY = vX – vY
uX – uY = vX + vY
uX – uY = vX – vY
A ball is falling at terminal speed in still air. The forces acting on the ball are upthrust, viscous drag and weight. What is the order of increasing magnitude of these three forces?
upthrust -> viscous drag -> weight
viscous drag -> upthrust -> weight
viscous drag -> weight -> upthrust
weight -> upthrust -> viscous drag
A body has a weight of 58.9 N when on the Earth. On the Moon, the acceleration of free fall is 1.64ms–2. What are the weight and the mass of the body when it is on the Moon?
A
B
C
D
Which row correctly states whether momentum and kinetic energy are conserved in an inelastic collision in which there are no external forces?
A
B
C
D
An aircraft travels along a horizontal path. Two of the forces that act horizontally on the aircraft are the thrust force of the engines and the force due to the wind. The vector diagram for these forces is shown. Which vector represents the resultant horizontal force acting on the aircraft due to these two forces?
Two solid cubes X and Y are made of material of the same density. Cube X has twice the mass of cube Y. Cube X has sides of length x. Cube Y has sides of length y. What is the ratio x/y ?
1.26
1.41
2.00
8.00
A rod is pivoted at point O. A force F is applied to the rod at point W, as shown. What is the moment of the force F about O?
F x distance OX
F x distance OY
F x distance WO
F x distance WX
Which expression for pressure is correct?
mass per unit area
mass per unit volume
force per unit area
force per unit volume
A ball is thrown vertically upwards from the surface of the Earth. Which statement describes the energy of the ball as it rises through the air?
The kinetic energy of the ball decreases as the gravitational potential energy decreases.
The kinetic energy of the ball decreases as the gravitational potential energy increases.
The kinetic energy of the ball increases as the gravitational potential energy decreases.
The total energy of the ball increases.
A steam turbine is used to drive a generator. The input power to the turbine is PI and the output power is PO. The power loss in the turbine is PL, as shown. What is the efficiency of the turbine?
Which of the following is an expression for power?
energy x time
force x velocity
force x displacement
mass x velocity
Car X is travelling at half the speed of car Y. Car X has twice the mass of car Y. Which statement is correct?
Car X has half the kinetic energy of car Y
Car X has one quarter of the kinetic energy of car Y.
Car X has twice the kinetic energy of car Y.
The two cars have the same kinetic energy.
