Question

Q. The position of an object moving along x-axis is given by x= a + bt2 where a=8.5m, b=2.5m/s2 and t is measured in seconds. What is its velocity at t=0s and t=2.0s. What is the average velocity b/w t=2.0s and t= 4.0s ?pls reply soon


with stepze

Answer 1

x=a+b*t^2
velocity v=dx/dt
v=2bt
v1=2*2.5*2=10m/s
v2=2*2.5*420m/s
Vavg=(v1+v2)/2
Vavg=15m/s