LINEAR KINETIC

Question 1

What is linear kinetic

Answer 1

the study of the forces that inhibit, cause, facilitate, or modify the motion of a body.

Question 2

what is the 1st law of newton

Answer 2

if no external force on an object = object will not move or continue to move at constant speed in a straight line)

Question 3

what is static equilibrium

Answer 3

the sum of all external force =0

Question 4

what is 2nd newton laws

Answer 4

that if a net external force is exerted on an object, the object will accelerate in the direction of the net external force, and its acceleration will be directly proportional to the net external force and inversely proportional to its mass.

Question 5

what happen if a larger force is applied to an object of an equal mass

Answer 5

the acceleration of that object will be greater

Question 6

what happen if the same amount of force is applied to an object of a greater mass

Answer 6

the acceleration will be less

Question 7

what is newton 3rd law

Answer 7

that if an object exerts a force on another object, the other object exerts the same force on the first object but in the opposite direction

Question 8

t/f force exist in mirrored pairs

Answer 8

true

Question 9

t/f force can produce unequal reaction

Answer 9

t

Question 10

what is newton universal gravitational law

Answer 10

All objects attract each other with a gravitational force that is inversely proportional to the square of the distance between the objects

Question 11

the force of gravity is proportional to what

Answer 11

the mass of each of the two bodies being attracted to each other.

Question 12

all factor of the law of universal gravitation are constants excepts

Answer 12

the mass of the object interacting with the earth

Question 13

what is linear momentum

Answer 13

the product of an object’s mass and its linear velocity

Question 14

T/F the faster an object move the less momentum it has

Answer 14

false, the more momentum

Question 15

T/F the larger a moving object mass, the more momentum it has

Answer 15

true

Question 16

T/F the greater the momentum possessed by a system the more difficult it is to stop that motion

Answer 16

true, more force would have to be applied to stop a system with a large momentum

Question 17

if the velocity of an object is constant, its momentum is constant or not constant ?

Answer 17

constant

Question 18

if the external force = 0 the momentum is smaller, greater or constant

Answer 18

constant

Question 19

which type of force is present if all the object of a system are considered together as one system and what does it means

Answer 19

the force of all the object exert against each other are internal force and don’t affect the motion of the whole system

Question 20

which law can be restated as the principal of conservation of linear momentum

Answer 20

1st

Question 21

the law of conservation of linear momentum only applied when

Answer 21

in the absence of force

Question 22

what happened with the momentum of 2 objects if they collide together

Answer 22

the total momentum of the system just before collision equals the total momentum just after collision.

Question 23

what is a elastic collision

Answer 23

when the object collide and bounce off each other

Question 24

what is an inelastic collision

Answer 24

when the object collide and stick together

Question 25

in which type of collision the final velocity is the same

Answer 25

inelastic since the object stay tighter and move together

Question 26

result of a collision depend on

Answer 26

degree to which the object stick together and the elasticity of the object

Question 27

what is the velocity of separation

Answer 27

The velocity of separation is the difference between the velocities of the two colliding objects just after the collision. It describes how fast they are moving away from each other

Question 28

what is velocity of approach

Answer 28

is the difference between the velocities of the two colliding objects just before the collision. It describes how fast they are moving toward each other.

Question 29

what is the coefficient of restitution for a perfect elastic collisions

Answer 29

1.0

Question 30

what is the coefficient of restitution for a perfect inelastic collision

Answer 30

0

Question 31

what is linear impulse

Answer 31

. Impulse is the product of force and the time during which the force acts

Question 32

if the force applied is not constant impulse is

Answer 32

the average force times the duration of the average force.

Question 33

what produced a change in momentum of an object

Answer 33

The impulse produced by a net force acting over some duration of time

Question 34

a change of momentum implies a change in. what

Answer 34

velocity

Question 35

which parameters do we want to increase if we want to have a larger change of the velocity of an object

Answer 35

having a larger average net force act on the object or by increasing the time during which the net force acts.