ddzgzd

W=mg

• the formula of the Weight

• the formula of the Friction

• the formula of the Gravitation

• the formula of the Normal force

F=kx

• the formula of the Weight

• the formula of the Friction

• the formula of the Gravitation

• the formula of the Elastic force

law of motion states that we can change the speed of an object only by resultant force.If there is no resultant force,the speed of the object will not change

• First

• Second

• Third

• All of them

law of motion states that the acceleration is directly proportional to force applied and indirectly proportional to mass

• First

• Second

• Third

• All of them

law of motion states that when one object applies a force on the second object, the second object applies the same force on the first one. However, with opposite direction

• First

• Second

• Third

• All of them

• gravitational acceleration on the surface of any plane

• gravitational force

• gravitational acceleration

When elevator moves downword with g it's as if a man falls downward eith g

• Weightlessness

• Weight

• Both

• 1d 2c 3a 4e 5b

• 1a 2c 3a 4e 5c

• 1c 2a 3a 4e 5b

• 1d 2c 3a 4b 5c

Which examples are field forces?

• a,b,c

• d,f

• a,d,f

• d,f,e

Net force?

• 5

• 6

• 7

• 8