This PhysCast looks at objects colliding and how to analyse them in terms of momentum. A child on a skateboard is moving along a horizontal surface at 5.0 m/s, when they collide with a rubber ball rolling towards them at 3.5 m/s. The ball has a mass of 2.2 kg, and after the collision is moving at 6.0 m/s opposite to its intial motion. The combined mass of the child and their skateboard is 45 kg. What is the velocity of the skateboarder after colliding with the ball?

This PhysCast is going to look at static equilibrium applied to a ladder leaning against a wall. A ladder of mass m and length L is leaning against a wall. The wall is frictionless and the coefficient of static friction between the ladder and the ground is mu. Find an expression for the minimum angle which the ladder can be lent without slipping?

This PhysCast is about thermodynamic processes. One mole of oxygen (assume it to be an ideal gas) expands at a constant temperature of 310 K from an initial volume V1 = 12 L to a final volume V1 = 19 L. How much is done by the gas during expansion?

In this PhysCast a camper hangs a 26 kg pack between two trees using separate roles of different lengths. Find the tension in each rope.

In this PhysCast we are told that a horseshoe has a surface are of 50cm2 and a blacksmith heats this to a red hot 810 degrees C. What rate does it radiate energy?

In this PhysCast we are told that a horseshoe has a surface are of 50cm2 and a blacksmith heats this to a red hot 810 degrees C. What rate does it radiate energy?

In this PhysCast a camper hangs a 26 kg pack between two trees using separate roles of different lengths. Find the tension in each rope.

This PhysCast is about thermodynamic processes. One mole of oxygen (assume it to be an ideal gas) expands at a constant temperature of 310 K from an initial volume V1 = 12 L to a final volume V1 = 19 L. How much is done by the gas during expansion?

This PhysCast is going to look at static equilibrium applied to a ladder leaning against a wall. A ladder of mass m and length L is leaning against a wall. The wall is frictionless and the coefficient of static friction between the ladder and the ground is mu. Find an expression for the minimum angle which the ladder can be lent without slipping?

This PhysCast looks at objects colliding and how to analyse them in terms of momentum. A child on a skateboard is moving along a horizontal surface at 5.0 m/s, when they collide with a rubber ball rolling towards them at 3.5 m/s. The ball has a mass of 2.2 kg, and after the collision is moving at 6.0 m/s opposite to its intial motion. The combined mass of the child and their skateboard is 45 kg. What is the velocity of the skateboarder after colliding with the ball?