Question

A particle moving on a straight line ultimately comes to rest. What is the angle between its initial velocity and acceleration ?

• A. zero
• B. ${45}^0$
• C. ${90}^0$
• D. ${180}^0$

Answer 1

Answer: (D)

${180}^0$

Since the particle decreased its velocity therefore the velocity has to be in opposite direction of acceleration so angle between their direction will be ${180}^0$.