What is the instantaneous acceleration at t=0? 0.6 m/s^2 1.67 m/s ^2 4.6 m/s ^2 6.27 m/s^2

14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is

What is friction? how does it affect the motion of an object?

Avehicle accelerates from 0 to 30 m/s in 10 seconds on a straight road