Question

008 10.0 points
homew ctp9 02 ex8 0080
identify the action - reaction pairs when a base - ball is in flight.

1. action: ball pulls down on earth. reaction: earth pulls up on ball. action: air pushes ball. reaction: ball pushes air.
2. action: earth pulls down on ball. reaction: ball pulls up on earth. action: air pushes ball. reaction: ball pushes air.
3. action: bat pushes ball backward. reaction: earth pulls down on ball. action: ball pushes air. reaction: air pushes ball.
4. all are wrong.
5. action: bat pushes ball forward. reaction: ball pulls up on earth. action: ball pushes air. reaction: air pushes ball.

009 10.0 points
conceptual 01 q01 91503
consider the following situations:
i) a pitcher throws a fast ball;
ii) a pencil rests on your desk;
iii) a car hits a tree;
iv) the wind pushes a sailboat.
in which situation(s) do(es) a pair of equal forces acting in opposite directions exist?

1. i, iii and iv only
2. none of these
3. i and iii only
4. ii, iii and iv only
5. ii and iv only
6. iii and iv only
7. i, ii and iv only
8. i and ii only

9.

another combination

1. all of these

010 10.0 points
earth, bug attraction 140574
the earth attracts a large flying bug (mass m) to center with a force of 0.10 newtons.
with what force does the bug attract the earth, in n?

1. 1.0 n
2. tons of newtons
3. zero; the earth attracts the bug, not the other way around
4. 0.10 n
5. 10 n
6. we need the mass of the bug.
7. a very, very, very small fraction of a newton, since the bug’s mass is negligible compared to the earth’s mass

011 10.0 points
homew ctp9 02 e26 92344
as you stand on a floor, the floor exerts an upward force on you.
why are you not moved upward by this force?

1. the upward force is greater than your weight, but air pressure pushes you down. without the air, you would be lifted up.
2. the upward force is less than your weight, so you do not move up.
3. the upward force is negligible.
4. the upward force is equal to your weight and the two forces cancel each other.
5. none of these

012 10.0 points
action reaction 01 121169
angelina jumps off a stool. as she is falling, the earth’s gravitational force on her is larger in magnitude than the gravitational force she is exerting on the earth.

1. true
2. false
3. this may happen in many cases, but not

013 10.0 points
pushing darkly
pushing darkly a very space ship moved the top of a value at a constant velocity of 10 m/s. what is the force of the very space ship pulls on the darkly ship’s hand?

1. zero, summer the space - ship is not a living, thing capable of applying a push.
2. 2 n
3. the spaceman from out to keep themselves a force to be met, necessary to keep the moving with constant velocity.
4. we need to know the mass of the very space ship (to maintain)

014 (part 1 of 2) 10.0 points
conceptual 01 09 92237
a fast - moving vw beetle collides head - on with a stationary bus. the vw has a much smaller mass than the bus.
which bug experienced the larger force?

1. the bug
2. unable to determine
3. they experienced the same magnitude of force.
4. the vw

015 (part 2 of 2) 10.0 points
which bug experienced the greatest acceleration?

1. the bug
2. their acceleration is same.
3. the vw
4. unable to determine

Explanation:

The questions in the image are about forces, motion, and gravitational interactions, which are topics in Physics (a subfield of Natural Science). For example, questions involve action - reaction pairs, gravitational forces, and normal forces. Physics deals with the study of matter, energy, and their interactions, which aligns with the concepts being tested here.

Answer:

Natural Science - Physics