slipper
A sledge is a trailer which runs on runners rather than wheels.
Toboggan is the word you are looking for. A toboggan is a simple sledge (or sled). It has no runners or skis on the underside and is just used on snow.
Friction is actually not helpful to runners on a sledge, as it can slow down the motion of the sledge. To make the sledge move faster or smoother, reducing friction between the runners and the surface they are sliding on would be more beneficial. Lubricants or smoother surfaces can help decrease friction and improve the performance of runners on a sledge.
A Man Called Sledge was created in 1970.
The duration of A Man Called Sledge is 1.55 hours.
a binlid
bobsleigh
The inclined plane in the form of a ramp. A sledge with narrow runners which reduced friction. Friction was further reduced by pouring a lubricant such as water or oil under the runners. The motive force was the brute force of thousands of naked slave labourers.
A 'maul' or a 'sledge hammer'.
D. Blockade Runners!
The coefficient of friction for sledge runners on grass is much higher than on ice, so there will be a large and sudden increase in the retarding force. The deceleration will be this force divided by the total mass. If the rider doesn't hang on he/she will tend to continue at the latest velocity (ie thrown forward off the sledge).