1. Give two examples where you push or pull to change the state of motion of an object.
1. Give two examples where you push or pull to change the state of motion of an object.
Explanation:
An example of a situation where pushing or pulling is used to change the state of motion of an object is 1. Pulling situations a) A drawer must be open to be used. The spool motion state is changed by this action. b) Pull the rope to draw water from the well.This movement modifies the kinematic state of the bucket. 2. Pressure situations a) The player's foot is on the ball. This action changes the motion state of the ball. b) We had to push big drums to move it from room to room.This action modifies the movement of the box.
2. Give two examples of when an applied force causes an object to change shape
2. Give two examples of when an applied force causes an object to change shape
Explanation:
The following forces can cause an object to change shape:
i)Clay is deformed by pressing on it with the hand.
ii) Pressing on a plastic container changes its shape.
3. Please fill in the blanks below.
(a) To draw water from a well, we __________ with a rope.
(b) Charged body __________ its uncharged opposite body.
(c) To move a full cart, we must __________ it.
(d) The north pole of a magnet __________ the north pole of another magnet.
3. Please fill in the blanks below.
(a) To draw water from a well, we __________ with a rope.
(b) Charged body __________ its uncharged opposite body.
(c) To move a full cart, we must __________ it.
(d) The north pole of a magnet __________ the north pole of another magnet.
Explanation:
We have to pull the rope to draw water from the well.Uncharged objects are attracted to charged objects. You have to pull or push the loaded cart to move it. The north pole of a magnet repels the north pole of another magnet.
4. Archers draw the bow while aiming at the target. Then she let go of the arrow and the arrow started moving towards the target.Based on this information, fill in the blanks in the following statements using the following terms. Muscular, Contact, Non-contact, Gravity, Friction, Form, Attraction
(a) To open the bow, the archer applies a force that causes his __________ to change.
(b) The force exerted by an archer shooting a bow is an example of __________ force.
(c) The type of force that causes a change in the state of motion of an arrow is an example of a __________ force.
(d) As the arrow travels towards its target, the force acting on it is due to __________ which is due to the air __________
4. Archers draw the bow while aiming at the target. Then she let go of the arrow and the arrow started moving towards the target.Based on this information, fill in the blanks in the following statements using the following terms. Muscular, Contact, Non-contact, Gravity, Friction, Form, Attraction
(a) To open the bow, the archer applies a force that causes his __________ to change.
(b) The force exerted by an archer shooting a bow is an example of __________ force.
(c) The type of force that causes a change in the state of motion of an arrow is an example of a __________ force.
(d) As the arrow travels towards its target, the force acting on it is due to __________ which is due to the air __________
Explanation:
(a) The archer applies force to the bow for the stretch and change its shape.
(b) An example of muscle strength is the force with which an archer draws a bow.
(c) The description of a contact force is a force that causes a change in the state of motion of the arrow.
(d) Gravity and air friction act on an arrow as it moves in the direction of its object.
5. In the following situations, identify who is applying the force and what it is acting on. Explain the role of force in each case.Squeeze a slice of lemon with your fingers to extract the juice. Remove the paste from the toothpaste tube. The load is suspended from a spring and the other end from a hook fixed to the wall. An athlete jumps high to clear a bar.
5. In the following situations, identify who is applying the force and what it is acting on. Explain the role of force in each case.Squeeze a slice of lemon with your fingers to extract the juice. Remove the paste from the toothpaste tube. The load is suspended from a spring and the other end from a hook fixed to the wall. An athlete jumps high to clear a bar.
Explanation:
a) Squeezing a lemon can generate muscle strength and extract the juice. As a result, the shape of the lemon changes
b) We use our physical strength to remove the paste from the toothpaste tube. Toothpaste tubes change shape due to muscle forces acting on them.
c) In this case, the spring is pushed down by the force exerted by the suspended weight. The spring expands as well. Its shape changes accordingly
d) Athletes push the ground with their feet by exerting muscular force. As a result, they can jump over the bar. As a result, their state of movement changes.
6. A blacksmith strikes a piece of hot iron with a hammer while making tools. How does the force of the hammer affect the sheet iron?
6. A blacksmith strikes a piece of hot iron with a hammer while making tools. How does the force of the hammer affect the sheet iron?
Explanation:
Blacksmiths use their physical strength to strike a hot iron. In order to give the iron the desired shape, muscle force changes the shape of the iron.
7. An inflated balloon is pressed against a wall after being rubbed with a piece of synthetic fabric. I found the ball stuck to the wall. What force could cause the attractive force between the ball and the wall?
7. An inflated balloon is pressed against a wall after being rubbed with a piece of synthetic fabric. I found the ball stuck to the wall. What force could cause the attractive force between the ball and the wall?
Explanation:
When a piece of synthetic material is passed over an inflated ball, it charges the ball. Charged objects attract uncharged objects. Leaning against a wall, this electrically charged balloon sticks to it. Charged balloons and walls are thus affected by electrostatic forces.
8. Name the force acting on a plastic bucket of water in your hand.Explain why the force acting on the cannon does not change its state of motion.
8. Name the force acting on a plastic bucket of water in your hand.Explain why the force acting on the cannon does not change its state of motion.
Explanation:
We forcefully hold the bucket above the ground. Muscular force fights gravity by pulling the bucket down. Both forces are equally powerful, but act in different directions. Therefore, no net force acts on the bucket.There is therefore no change in the state of the movement.
9. A rocket is launched upwards to put a satellite into orbit. Name the two forces that act on the rocket immediately after it leaves the launch pad.
9. A rocket is launched upwards to put a satellite into orbit. Name the two forces that act on the rocket immediately after it leaves the launch pad.
Explanation:
The rocket is pulled towards the ground by gravity and repelled by the friction of the earth's atmosphere.
10. When we squeeze the dropper bulb with the tip into the water, we can see how the air in the dropper escapes in the form of bubbles.Once we release the pressure on the bulb, the dropper will fill with water. The rise of water in the dropper is due to
(a) water pressure
(b) gravity
(c) shape of rubber ball
(d) atmospheric pressure
10. When we squeeze the dropper bulb with the tip into the water, we can see how the air in the dropper escapes in the form of bubbles.Once we release the pressure on the bulb, the dropper will fill with water. The rise of water in the dropper is due to
(a) water pressure
(b) gravity
(c) shape of rubber ball
(d) atmospheric pressure
Explanation:
The air pressure causes the level in the dropper to rise. Once all the air has been expelled from the nozzle, water will fill the dropper nozzle due to atmospheric pressure
11. two boys, A and B, apply a force to a block of wood.Which of the following statements is true if the box moves to the right?
(a) A exerts a greater force than B.
(b) The magnitude of the force exerted by A is less than that of B.
(c) The resultant force on the block is directed towards A.
(d ) The magnitude of the force exerted by is equal to that of B.1574800
11. two boys, A and B, apply a force to a block of wood.Which of the following statements is true if the box moves to the right?
(a) A exerts a greater force than B.
(b) The magnitude of the force exerted by A is less than that of B.
(c) The resultant force on the block is directed towards A.
(d ) The magnitude of the force exerted by is equal to that of B.1574800
Explanation:
The answer is
(a)A exerts a greater force than B. Explanation: Since the block is moving to the right, or toward B, the force applied by A is greater than that of B.
12. In the circuit shown in Figure 11.2, when the circuit is complete, the hammer strikes the gong.Which of the following forces is responsible for the movement of the hammer?
(a) Gravity alone
(b) Electrostatic force alone
(c) Magnetic force alone
(d) Friction alone 123845024825800
12. In the circuit shown in Figure 11.2, when the circuit is complete, the hammer strikes the gong.Which of the following forces is responsible for the movement of the hammer?
(a) Gravity alone
(b) Electrostatic force alone
(c) Magnetic force alone
(d) Friction alone 123845024825800
Explanation:
Magnetic force alone is the answer ©. Explanation: Coil acts like an electromagnet by generating a magnetic force when a current passes through it. So the only explanation is magnetism.
13. What does atmospheric pressure mean?
13. What does atmospheric pressure mean?
Explanation:
The term “atmospheric pressure†refers to the weight of air moving over a given area. Question: What does size 14 mean? Answer: The magnitude of a force generally describes its strength. Question: How does the liquid exert pressure? Answer: Fluid exerts pressure on a surface from all angles.In addition, the liquid exerts pressure on the walls of the container.
