1. When two cars of different mass are pushed away from each other, momentum determines the speed and the distance travelled by each car.

2. This device demonstrates the principle of momentum and the calculations can be performed.

3. The equation to calculate momentum is:

      P = m x V
      where,
      P: momentum;
      m: mass
      v: velocity

4. Concepts that can be learnt from this experiment:
      Potential energy of the spring
      Kinetic energy
      Momentum transfer
      Friction coefficient
      Laws of motion

1. This device generates centrifugal force as the handle is turned.

2. The centrifugal force results in the radial movement of the disc.

3. The equation to calculate momentum is:
      F = mrω²
      where: F: centrifugal force (N)
      m: mass (kg)
      r: radius(m)
      ω: angular velocity (rad/sec²)

4. Concepts that can be learnt from this experiment:
      Rpm
      Centrifugal force
      Force calculation
      Spring constant
      Laws of motion

1. Spring balance is used to measure the forces and weights.

2. This spring balance has a calibrated spring that can be used to calculate and predict measured weight based upon the travel of the spring.

3. It works by Hooke's Law, which states that “the force needed to extend a spring is proportional to the distance that the spring is extended from it’s rest position”.

4. Concepts that can be learnt from this experiment:
      Force calculation
      Spring constant
      Newton’s Law