The chart describes four objects experiencing one or more
frictional forces.
Which statement explains the type of friction acting on each
object?
Object
a bike being ridden down a hill
a sled going down a snowy hill
a braked motorcycle skidding
an elephant standing still
The bike has rolling friction, the sled and the motorcycle
have sliding friction, and the elephant has static friction.
The bike and sled have sliding friction, and the
motorcycle and elephant have static friction.
The bike has static friction, the sled and elephant have
sliding friction, and the motorcycle has rolling friction.
The bike and motorcycle have rolling friction, the sled has
static friction, and the elephant has sliding friction.