A car travels a distance of 65 km. For the first 30 minutes, it is driven at a constant speed of 70 km/hr. The motor begins to vibrate and the driver reduces the speed to 20 km/hr for the rest of the trip. The average speed for the entire trip is?

Which of the following is a source of heat for magma formation? magma plumes in the continental crust friction due to divergence friction due to subduction magma plumes in the oceanic crust

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

Which of the following is an example of motion in two dimensions?