1. (i) If the engine of a car provides an acceleration of 2 m/s2  to start it from rest, assuming the mass to be roughly 1000 kg, calculate :
 
    (a) Force provided by the engine
    (b) Momentum after 10 seconds
    (c) Time after which the car comes to rest, if the engine is turned off after 15 seconds.(Frictional            force = 15 N )
 
    (ii) The kind of force required to accelerate the motion of a bodyis :
 
    (a) Frictional force  (b) Gravitational force  (c)  Unbalanced force (d) Balanced force
 
( 5 marks )

Asked by gpnkumar0 | 21st Sep, 2016, 06:55: AM

Expert Answer:

Answered by Romal Bhansali | 21st Sep, 2016, 09:40: AM