- Can the direction of velocity change while experiencing a constant acceleration?
- Can a body having zero velocity still be accelerating?
- A body is projected vertically upwards with a velocity of 20 m/s. Find the distance travelled by it in 3s. Taking g=1om/s2
1-Yes ,the direction of velocity can change while experiencing a constant acceleration. Like, in uniform circular motion there is a change in direction of the velocity and acceleration is constant in this case.
2-Yes, that is certainly possible. If we throw a ball in the air,then at its highest point the velocity is zero but it is still accelerating downwards due to gravity.
3-
Given that:
u = 20 ms-1 ,g= 10 ms-2 and t= 3 sec
Using equation of motion
s = ut + ½ at2
s= 20×3 – ½×10×32
= 60 – 45= 15 m