Plzz give me answer
Answers
Answer:
1. 1 m/s = 3.6 km/h
2. 666.667 m/s
3.Motion will be accelerated and direction of acceleration will be normal to the velocity of the satellite
It is given that a satellite is moving around the earth with uniform speed
Speed is uniform but as the satellite is moving around earth so direct on speed is changing at every instant means velocity is not uniform
And if velocity is not uniform means there is change in velocity so there will be acceleration in the motion
The direction of acceleration will be normal to the velocity and directed towards center of earth.
4. 0 units
5. Yes,rest and motion are relative. It means an object in one situation can be at rest but in another situation, the same object can be in motion. For example:- A person sitting in a moving train is at rest with respect to his fellow passengers but is in motion with respect to the objects outside the train.
6. a) No, we cannot instantaneously stop a fast moving automobile as it requires sudden change in momentum which is not possible. Changing momentum is a gradual process as it requires force to act over a period of time.
b) Accelerating objects are objects which are changing their velocity - either the speed (i.e., magnitude of the velocity vector) or the direction. An object undergoing uniform circular motion is moving with a constant speed. Nonetheless, it is accelerating due to its change in direction.
c) uniform circular motion- direction change
uniform linear motion- constant direction
7. Angular speed is the rate at which an object changes its angle (measured) in radians, in a given time period. Angular speed has a magnitude (a value) only. Angular speed = (final angle) - (initial angle) / time = change in position/time. ω = θ /t. ω = angular speed in radians/sec.
At a distance r from the center of the rotation, a point on the object has a linear speed equal to the angular speed multiplied by the distance r.
8. Uniform or constant acceleration is a type of motion in which the velocity of an object changes by an equal amount in every equal time period. A frequently cited example of uniform acceleration is that of an object in free fall in a uniform gravitational field. Uniform acceleration means that the acceleration of the car remains the same over a period of time.Non uniform acceleration means that the acceleration of an object is not constant, but either increasing or decreasing over a passage of time
9. Negative acceleration, otherwise known as deceleration, is the phenomenon of some object's velocity decreasing over time at a steady rate. units: meter per second squared.
10. please google it!
11. Motion, in physics, change with time of the position or orientation of a body. Motion along a line or a curve is called translation. Motion that changes the orientation of a body is called rotation. In both cases all points in the body have the same velocity (directed speed) and the same acceleration (time rate of change of velocity). The most general kind of motion combines both translation and rotation.
Uniform motion: This type of motion is defined as the motion of an object in which the object travels in a straight line and its velocity remains constant along that line as it covers equal distances in equal intervals of time, irrespective of the duration of the time.
Non-uniform motion: can be defined as body covered unequal distance in equal intervals of time.
12. please refer the above answers!
13. refer que.11!
14. the rate at which someone or something moves or operates or is able to move or operate. Average speed is calculated by dividing the total distance that something has traveled by the total amount of time it took it to travel that distance.
15. (i) s = ut + ½at²
(ii) v² = u² + 2as
(iii) v = u + at
HUFF! FINALLY!
MARK ME AS BRAINLIEST!! GOOD LUCK :))