Which pair of sentences is describing the same velocity? a)a car is parked. a car is moving in circles. b)a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c)a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d)valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

Calculate the work done by an external agent during an isothermal compression of 1.00 mol of oxygen from a volume of 22.4 l at 10∘c and 1.0 atm pressure to 16.8l

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.