Phy-122 Scalars and Vectors 02
5-
A force of 6N is acting along x-axis. Its y-component is
6 Zero
c) 12N
a) 6N
d) 3N
6- Cos60°has the value:
a) 1b)0.8666) 0.5
d) A Cote
a) A Sino
d) 0.707
7. If a vector A makes an angle with x-axis, its X-componen
b) A tan
O A Coso
3. If two vectors make an angle of90°with each other, their scal
10
b) 1
c) -1
d) 2
-
The scalar product of two vectors A and B at an angle 8
is
B Sind © AB Coso d) AB ta
b)​

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wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.

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force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.