QUIZ 1 “Nota” means none of the above
- A space ship
travels to outer space. When it
reaches outer space, the rockets are shut off. The ship will
(a) slow down and eventually stop (b) immediately stop (c) move in a straight
line with constant speed (d) speed up
(e) nota
2. Consider a pair of forces , one having
magnitude 56 N and the other 25 N.
What is the maximum net force possible for these two forces?
(a) 31 N
(b) 81 N (c) 1400 N (d) nota
3. Referring to the previous problem, what is
the minimum net force possible
for these two forces?
(a) 31 N
(b) 81 N (c) 1400 N (d) 0 N
(e) nota
4. A staging at
rest weighs 300 N and supports a box that weighs 300 N. The
reading on the left scale
is 400 N. What is the reading on the right scale???
(a)
300 N (b) 400 N (c) 200 N
(d) nota
5. Starting from rest, car 1 accelerates in a
straight line to a speed of 50 km/h in a certain time period. Also starting
from rest, car 2 accelerates in a straight line to a speed of 60 km/h in the same time period. What car has the
greatest acceleration?
(a) car 1
(b) car 2 (c) not enough
information to decide (d) nota
6. What is the acceleration of a car that
moves at a steady velocity of 200 km/h
for 500 seconds.
(a) 0.2 km/h2 (b)
2.5 km/h2 (c) 0
km/h2 (d) nota
7. For a freely falling body, what is the
acceleration at the end of the 2nd second of fall?
(a)
19.6 m/s2 (b) 0 m/s2 (c) 9.8 m/s2 (d) nota
8. For a freely falling body that is dropped,
what is the speed at the end of
the 2nd second of fall?
(a) 19.6 m/s (b)
9.8 m/s (c) 0 m/s (d) nota
9. If you drop an object toward the ground,
the acceleration will be 9.8 m/s2. If you throw it down instead, the
acceleration will be
(a) greater than 9.8 m/s2. (b) equal to 9.8 m/s2 (c) nota
10. If you throw an
object upward away from the ground, the acceleration will be
(a) less than 9.8 m/s2. (b) equal to 9.8 m/s2 (c) nota