Buzz
Solving Exercise C1 on page 24 of Physics 6 textbook
Exercise Prompt:
Find four specific examples to illustrate motion transformations.
Solution:
- A car is moving, we press the brake causing the car to slow down and then stop.
- A football player kicks a stationary ball, causing the ball to start moving.
- If you pull the bike backward while it's in motion, it will slow down.
- The bicycle speeds up when going downhill.
Solving Exercise C2 on page 24 of Physics 6 textbook
Exercise Prompt:
Answer the question stated at the beginning of the exercise.
Solution:
The person pulling the bow applies force to it, causing the bowstring and limbs to deform. Therefore, the first person is pulling the bow, and the second person is not pulling it yet.
Solving Exercise C3 on page 25 of Physics 6 textbook
Exercise Prompt:
In experiment 6 (H.6.1), while holding the car, we suddenly release it without holding it anymore.
Comment on the result of the round leaf spring's effect on the car at that moment.
Solution:
When we use our hand to push the car, compressing the coil spring, at the contact point between the coil spring and the car, there is a reverse elastic force equal in magnitude to the compressive force of the car. So when we release our hand, it is this elastic force that pushes the car in the opposite direction compared to the compressive force.
Solving Exercise C4 on page 25 of Physics 6 textbook
Exercise Prompt:
Tie a rope to a rolling car, then release it to run down from the top of an inclined slope. Find a way to hold the rope so that the car stops halfway down the slope (H.7.1).
Comment on the result of the force applied by our hand to the car via the rope.
Solution:
In the experiment shown in the diagram, the force exerted by our hand on the car via the rope has caused the moving car to come to a stop.
Solving Exercise C5 on page 25 of Physics 6 textbook
Exercise Prompt:
Place a horizontal coil spring halfway down the slope. Release a rolling ball from the top of the slope so that it collides with the side of the coil spring (H.7.2).
Comment on the result of the force exerted by the spring on the ball upon collision.
Solution:
In the experiment above, the force exerted by the spring on the ball upon collision causes the ball to move in a different direction.
Solving Exercise C6 on page 25 of Physics 6 textbook
Exercise Prompt:
Pressing both ends of a spring with our hand. Comment on the result of the force exerted by our hand on the spring.
Solution:
The force applied by our hand on the spring causes the spring to deform.
Solving Exercise C7 on page 25 of Physics 6 textbook
Exercise Prompt:
Choose the appropriate phrase from the options given to fill in the blanks in the following sentences:
a) The pushing force exerted by the coil spring on the rolling car has (1) .................. the car.
b) The force applied by our hand (via the rope) on the rolling car while it's moving has (2) .................. the car.
c) The force exerted by the coil spring on the ball upon collision has (3) .................. the ball.
d) The force applied by our hand to compress the spring has (4) ................... the spring.
Solution:
(1) altered the motion of
(2) changed the motion of
(3) altered the motion of
(4) deformed
Solving Exercise C8 on page 26 of Physics 6 textbook
Exercise Prompt:
Write the complete sentence below:
The force exerted by object A on object B can either (1) ............ object B or (2) ................... object B. Both of these outcomes can occur simultaneously.
Solution:
(1) alter the motion of
(2) deform
Solving Exercise C9 on page 26 of Physics 6 textbook
Exercise Prompt:
Provide 3 examples of forces acting on an object causing a change in the object's motion.
Solution:
- Pushing a stationary iron ball on a horizontal surface with our hand will set the ball in motion.
- When driving a nail into a wall, the hammer applies force to the nail, causing the stationary nail to move deeply into the wall.
- Pulling a flag causes the rope and the flag to move.
Solving Exercise C10 on page 26 of Physics 6 textbook
Exercise Prompt:
Provide 3 examples of forces acting on an object causing the object to deform.
Solution:
- Sitting on a cushion, we notice the cushion sinking down.
- When a racket strikes a ball, both the racket and the ball deform.
- Pulling both ends of a spring together with our hand, we observe the two ends of the spring expanding.
Solving Exercise C11 on page 26 of Physics 6 textbook
Exercise Prompt:
Provide an example of a force acting on an object that can simultaneously cause both of the aforementioned outcomes.
Solution:
A soccer player kicking a stationary ball on the field causes the ball to deform and alters its motion.
In Chapter I Mechanics of Physics 6, students will learn about Elastic Forces. Let's solve exercises on pages 31, 32 of Physics 6 to understand this lesson better.
In Chapter I Mechanics of Physics 6, students will study Force Measurement. Weight and Mass along with solving exercises on pages 34, 35 of Physics 6.
