10. A toy car on a track starts from rest at the top of a 2.3 meter hill and rolls down. The car then goes
up a ramp and flies off the track (see diagram below). If the end of the ramp is 0.91 meters high, at
what speed does the car leave the track?
2.3 m
0.91 m

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

Caused conformity rates to go down. apex ; )

F  you double the  force, you double the acceleration, but  if  you double the  mass, you velocity. all bodies accelerate at the  same  rate regardless of size or  mass.

The answer is d, you can easily test a theory! hope i you : )