Question

state the reasons if possible or not for any object in motion to have :
a).zero distance covered and may have non zero displacement
b). zero speed and may have non zero velocity
c). zero speed at an instant but non zero acceleration at the same time
d). positive acceleration while speeding up

Answer 1

a. it's not possible as a distance covered could only have displacement.
b. speed is distance per unit time and velocity is displacement per unit time theirfore this statement is also false in accordance to 1st statement.
c.it is not possible as the acceleration is change in speed.
d.it is possible as the velocity is changing theirfore the object will have acceleration.

hope this helps you.
marking the answer brainleast would be appreciated.^_^