CBSE Class 9 Answered
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 | 21 Sep, 2016, 06:55: AM
Expert Answer
Answered by Romal Bhansali | 21 Sep, 2016, 09:40: AM
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