An escalator at a shopping mall is 10 m long and moves at a constant speed of 0. 5 m/s. If Jose steps onto the escalator at the bottom while it is moving, how long will it take him to travel the 10 m. pick from the following. (1). 5 s. (2). 10 s. (3). 15 s. (4). 20 s.
The answer is: