(For items 5-7. Refer to the problem.)
A speed boat from Seahorse Tourist Inn is travelling to Fantastic Island with initial velocity
of +6.0 m/s. The speed boat is accelerating uniformly at 2.0 m/s2, what is the final velocity
and displacement of the boat after 8.0 seconds?
5. What is being asked?
A. time and acceleration
B. velocity and time
C. speed
D. velocity and displacement
6. What equation is applicable based on the problem?
i. Vi= V: at
ii. Vavg = 1/2 (vf +vi)
iii. d = 1/2 (vf + vi) t
iv. d = vit + 1/2 at2
A. i & iv
B. ii & iii
C. ii only
D. i only
7. What is the final velocity and displacement of the boat after 8.0 seconds?
A. Vf= +52 m/s; d = +85 m
B. Vf = +22 m/s; d = + 110 m
C. Vf = -22 m/s; d = + 120 m
D. Vf= -52 m/s; d = -110 m
8. Two metal balls are of the same size, but one weighs twice as much as the other. The balls are dropped from the roof of a single-story building at the same time. The time it takes the balls to reach the ground below is:
A. about the same for both balls.
B. about half as long for the heavier ball as for the lighter one.
C. about half as long for the lighter ball as for the heavier one.
D. considerably less for the lighter ball but not necessarily half as long.
E. considerably less for the heavier ball but not necessarily half as long.
Share
Answer:
5. 12 m/s²
6.D.
7.B.
8.C.
Explanation:
Hope It Helps