If you take a one hour drive at the average speed of 65 mph, is it possible for another car with an average speed of 55 mph to pass you?

Could we see a galaxy that is 20 billion light-years away?

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.