Author Question: A 1321-kg car climbs a 5.0 slope at a constant speed of 80km/s Assuming that air resistance may be ... (Read 34 times)

Medesa · **on:** Jul 29, 2018

A 1321-kg car climbs a 5.0 slope at a constant speed of 80km/s Assuming that air resistance may be neglected, at what rate (in kW) must the engine deliver energy to the drive wheels of the car?

A) 25 kW B) 48 kW C) 287 kW D) 38 kW

Question 2

One unusual aspect of dark matter is

A) it exerts no gravitational force.
B) it moves faster than lightspeed.
C) it exerts a new kind of fundamental force, never observed before.
D) it does not interact with electromagnetic radiation.
E) its gravitational force pushes (or repels) instead of pulling.