Which is an example of sliding friction?

a. a car’s wheels rolling down the road
b. a bird flying through the air
c. a child applying the brakes on his bike
d. a bowling ball rolling down a lane

Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is

Experiment scenario 2: a biology student wants to conduct a study of how the amount of food affects the weight gain for mice. i have set up four cages with a mouse in each cage. fill in the boxes that would allow the biology student to complete the study correctly

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?