2. A ball is thrown straight upward with an initial velocity of 40 m/s.
After two seconds of flight, it will have a velocity of about
a. 0 m/s
b. 60 m/s
c. 20 m/s
d. can't be determined
and an acceleration of about
a. 10 m/s2 upward
b. 10 m/s2 downward
c. zero, weightless condition
d. less than 10 m/s2 because it has slowed down
3. A Mack truck and a Honda Civic traveling at the same speed
collide head-on. The impact force is greatest on the
a. Honda Civic c. ...is the same for both
b. Mack truck
4. A Mack truck and a Honda Civic traveling at the same speed have a
head-on collision. The vehicle to undergo the greatest acceleration will
a. Honda Civic c. both the same
b. Mack truck
5. A ball rolls down an incline from rest to a distance of 4 meters
in 2 seconds. The average velocity is
a. 2 m/s
b. 0.5 m/s
c. 1/8 m/s
d. 8 m/s
6. If the acceleration is constant, the final velocity at the end of
the roll above would be expected to be
a. 4 m/s
b. 1 m/s
c. 16 m/s
d. 2 m/s
7. A net force of 40 newtons acts on a 2 kg block and moves it 4 meters
in the direction of the force. The work done on the block is
a. 80 joules
b. 160 joules
c. 320 joules
d. 1600 joules
8. A car crashes into a barrier and is brought to a sudden stop. To
minimize the impact force on the car
a. the car should be build solidly so that it does not collapse
b. the car should be build in such a way to give maximum collapse on impact.
c. nonsense! the impact force just depends on how fast you were going.
a. increasing the distance traveled during an impact decreases the force of impact.
b. increasing the distance traveled during an impact increases the force of impact.
c. the force of impact is independent of the distance traveled during impact.
9. A woman on the surface of the Earth has a mass of 50 kilograms and
a weight of 490 newtons. If the woman were floating freely inside a space
habitat far away from Earth, she would have
a. less weight and more mass
b. less weight and the same mass.
c. less weight and less mass
d. more weight and less mass.
e. none of these.
10. If you mass a rock in air and find its mass to be 45 grams, and then mass it while submerged in water (density 1 gm/cm3) and find its apparent mass to be 30 grams, then the density of the rock is
a. 1.5 gm/cm3
b. 3 gm/cm3
c. 2 gm/cm3
d. can't be determined with this data
11. For an elliptical planetary orbit, the sun is located at
a. the center of the ellipse.
b. one focus of the ellipse.
c. the perigee point of the ellipse.
d. the apogee point on the ellipse.
12. Newton's Second Law of Motion connected the action of a "force" with a resulting "acceleration". What property of an object influences how large that acceleration will be?
13. Johannes Kepler developed his laws of planetary motion bases in the motion of which planet?
14. In which constellation would you find mars tonight?
15. In general planets appear to move in which direction among the stars?
HyperPhysics***** NSCI 3001