Activity number 2
Write the answers of following questions
1)What factors do you need to consider to determine if an object is moving
2) Find the different examples of circular motion in daily life
3) Observe the second hand of the clock. write about its speed and velocity
3)Which Newton's law is based on the principle of rocket? Explain in your own word principle behind the flight of rocket
4)Take five examples around you and write an explanation based on Newton's laws of motion
5) why it is easier to stop a tennis ball than to stop a cricket ball with the same speed
6) Suppose a scooter and truck collide which of two will thrown far away
7) If an object moves 18m in the first 3 seconds,then 22 m in 3 seconds and 14 m in the last 3 seconds then calculate an average speed
Answers
Answer:
1. You can describe the motion of an object by its position, speed, direction, and acceleration. An object is moving if its position relative to a fixed point is changing. Even things that appear to be at rest move.
2. Some examples of circular motion are as follows:
1. Motion of a wheel.
2. A stone tied to a string.
3. Artificial satellite orbiting earth.
4. Turning of a car around a curve.
3. The propulsion of all rockets, jet engines, deflating balloons, and even squids and octopuses is explained by the same physical principle: Newton's third law of motion. Matter is forcefully ejected from a system, producing an equal and opposite reaction on what remains. ... shows a rocket accelerating straight up.
4. 1) Newton's law of motion: Explanation with examples
According to the first law: If an object is at rest/uniform motion, it will continue to remain in rest/motion unless an external unbalanced force act
on it.
Example 1: Pushing a big rock, the rock will stay in place until you push it.
Example 2: When a rocket goes up in space, there is almost a perfect amount of earth gravity for the ship to not come crashing down.
Example 3: When we shot the bullet in a space, it would travel in a straight line until it reaches the gravity of another planet.
2) Newton's law of motion: Explanation with examples
According to 2nd law: The force is directly proportional to the rate of change of momentum.
Example 1: If a truck and bicycle did a short race at the same speed, then bicycle will win the race.
Example 2: For a long race truck will win the race because Fama and a(acceleration) is more.
Example 3: If a dog is pulling a rock then acceleration is fully dependent on the force of dog because the mass of rock will not change.
3) Newton's law of motion: Explanation with
examples
According to the 3rd law of motion, for every a there is an equal and opposite reaction.
Example 1: When we push the floor, the floor pushes
back.
Example 2: Cars wheel produce friction trying to push and ground exerts an opposite force to push it.
Example 3: Rockets use fuel to push on ground, which
lifts them up. Rockets also rely on friction with air so
that the fuel still works.
5. The momentum 's path is the same as that of the velocity. ... The tennis ball thus has less momentum than the cricket ball, which makes it easier to avoid a tennis ball than a cricket ball going at the same pace.
6. When the scooter and truck are collide, the scooter is thrown away because the momentum of the truck is greater than the scooter.
7. (PIC PROVIDED ON THE TOP)
