Answer :
According to Newton's second law,
[tex]F=ma[/tex]Where F is the force acting on a body, m is the mass of the body, and a is the acceleration of the body due to the applied force.
The acceleration is given by,
[tex]a=\frac{v}{t}[/tex]Where v is the velocity and t is the time interval.
Substituting this equation in the first equation,
[tex]F=\frac{mv}{t}[/tex]From the question,
F=60 N
m=30 kg
t=1.5 s
On substituting these values in the equations,
[tex]60=30\times\frac{v}{1.5}[/tex]Which gives,
[tex]v=\frac{60\times1.5}{30}=3\text{ m/s}[/tex]Therefore the velocity of the bicycle is 3 m/s
