The momentum of a moving particle is vectorially gives as where stands for time. Choose the correct option: 

a) 
The applied force is constant 
b) 
The momentum is constant 
c) 
The applied force always remains perpendicular to the momentum 
d) 
The applied force is always parallel to the momentum 
The momentum of a moving particle is vectorially gives as where stands for time. Choose the correct option: 

a) 
The applied force is constant 
b) 
The momentum is constant 
c) 
The applied force always remains perpendicular to the momentum 
d) 
The applied force is always parallel to the momentum 
(c) Both and are functions of time. So none of them is constant We see that So 