10. if the acceleration vector of an object is in opposite direction as the velocity vector, then:
a. the object is moving in the negative x-direction
b. speeding up
c. slowing down
e. at rest
12. a ball thrown horizontally from a point 24m above ground strikes the ground after traveling horizontally a distance of 18 m. with what speed was it thrown?
a. 7.40 m/s
18. a 1.6 kg fish is weighed with two spring scales, each of negligible weight. what will be the readings on the scales?
a. the bottom cale will read 16 N and top scale will read 0.
b. each scale will show a reading of 8 N
c. the top scale will read 16 N and bottom scal will be 0
d. each scale will show a reading of 16N
Answer: c. slowing down
if the acceleration vector of an object is in opposite direction as the velocity this means the change in velocity per ...
An explanation is provided for each answer.