Question

Answer the following questions:

A. Why do we slip on a recently mopped floor?

B. Alida runs her toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be
(a) wet marble floor, dry marble floor, newspaper and towel.
(b) newspaper, towel, dry marble floor, wet marble floor.
(c) towel, newspaper, dry marble floor, wet marble floor
(d) wet marble floor, dry marble floor, towel, newspaper [5 MARKS]

Answer 1

Part A : 2 Marks
Part B : 3 Marks

A. The water on the surface decreases the friction. That is water on the floor act as a lubricant that decreases the friction between our shoes and the floor. So we slip easily on a recently mopped floor.

B. (a) wet marble floor, dry marble floor, newspaper and towel.