Question

a car moves at a speed of 4 metre per second along a horizontal road to overtake a stationary truck when it is 6 metre behind the truck the truck starts moving with a constant acceleration of 1.2 metre per second square then the time taken by the car to over take the truck is​

Answer 1

Answer:

ANSWER

(a)After t sec the truck moved

s=ut+21at2

Initial velocityu=0

60=21×2.20×t2

t2=54.54

t=7.39 sec

(b) Let the distance be d meters

When they met, automobile moved

60+d=21×3.50×t2

60+d=21×3.50×7.392

60+d=95.57

d=95.57−60

d=35.57 m

(c)Velocity of truck

vT=u+at

vT=2.20×7.39=16.258 m/s

Velocity of automobile

vA=u+at

vA=3.50×7.39=25.865 m/s