The final image from a simple two-lens telescope is:
virtual and right-way up
virtual and inverted
real and inverted
real and right-way up

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

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.

Acar driving 22.7 m/s on flat ground drives off a 42.3 m high cliff. how much time does it take to reach the ground?