 1.2
Kinematics (
18 Periods)
 Equations
of uniformly accelerated linear motion.
Distance,
speed-time graphs for uniformly and non-uniformly accelerated
linear motion.
Interpretation
of area under a speed-time graph.
Meaning of
the slope of the tangent at a point on the distance-time ,
speed-time graphs.
Motion of
a body falling freely near the surface of the Earth
- Acceleration due to gravity (g)
Motion of
a projectile:
- An example of motion due to uniformly velocity
in one direction and uniform
acceleration
in the perpendicular direction.
- Time taken to reach maximum height, time of flight
T, range of a projectile.
Relative
velocity
Assessment Objectives:
By the end of this topic, the student should be able to:
- Define displacement ,speed, velocity and acceleration.
- Draw sketchs and interpret various motion graphs.
- Determine the distance travelled and the acceleration
from the velocity-time graph.
- Derive and use the following expressions:
- v = u + at, s = ut + ½
at2 and v2 = u2
+ 2as
- Perform and describe an experiment to determine
g using a ticker-timer.
- Derive and use expressions for time taken to reach
maximum height, time of flight,
maximum height and range for a projectile.
- Solve problems involving relative velocity.
UNIT
2 : DYNAMICS 1
2.1 Newton's Laws of Motion and Momentum
( 9 Periods)
Newton's
laws of motion.
- inertia
- resultant force F =ma
Linear momentum
and its conservation
Impulse and
relation to change momentum
Elastic and
perfect inelastic collisions.
Assessment Objectives:
By the end of this topic, the student should be able to:
- State and use Newton's laws of motion.
- Define linear momentum.
- Verify that linear momentum is conserved in
a collision.
- Verify and use the Principle of conservation of linear
momentum in collisions.
- Distinguish between elastic , inelastic and perfectly
inelastic collisions.
2.2 Solid
Friction ( 8 Periods)
Laws
of friction.
Coeffients
of static and kinetic friction.
Motion of
a body on a rough inclined plane.
Molecular
theory explanation of solid friction
Assessment Objectives:
By the end of this topic, the student be able to:
- Perform and describe experiments to measure the coefficient
of static
and of kinetic friction.
- State and explain the laws of solid friction in terms
of molecular theory.
- Solve problem involving motion of a body on rough
surfaces.
2.3 Work, Energy and Power (15
Periods)
Work as a
product of force and distance in the direction of force.
Work-energy
theorem
Force-distance
graphs
Kinetic and
gravitationa potential energy
Elastic potential
energy
Conservative
forces
Energy conservation
and conversion
Dissipative
forces
Power as
rate of transfer of energy; P = Fv
Assessment Objectives.
By the end of this topic, the student should be
able to:
- Define work, energy and power.
- State and apply the Principle of energy conversion.
- Relate work to the force-distance graph.
- Calculate work done in a number of situations.
- Derive and use the expressions K.E = ½
mv2, P.E = mgh
- Distinguish between kinetic energy and gravitational
potential energy.
- Derive and use the relationship between work done
and change in energy.
- Perform experiments to determine efficiency of a
simple system.
- State the Principle of Conservation of mechanical
energy and illustrate it
with examples.
- Solve problems involving conservation of mechanical
energy.
- Derive and use the expression P = Fv
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