Questions in Motion in A Straight Line

Select	Question
	The engine of a car produces acceleration \[4\,m/{s^2}\] in the car. If this car pulls another car of same mass, what will be the acceleration produced
	If a body starts from rest and travels 120 cm in the 6th second, then what is the acceleration
	If a car at rest accelerates uniformly to a speed of 144 km/h in 20 s. Then it covers a distance of
	The position \[x\] of a particle varies with time \[t\] as \[x = a{t^2} - b{t^3}\]. The acceleration of the particle will be zero at time \[t\] equal to
	A truck and a car are moving with equal velocity. On applying the brakes both will stop after certain distance, then
	If a train travelling at 72 kmph is to be brought to rest in a distance of 200 metres, then its retardation should be
	The displacement of a particle starting from rest (at \[t = 0\]) is given by \[s = 6{t^2} - {t^3}\]. The time in seconds at which the particle will attain zero velocity again, is
	What is the relation between displacement, time and acceleration in case of a body having uniform acceleration
	Two cars A and B at rest at same point initially. If A starts with uniform velocity of 40 m/sec and B starts in the same direction with constant acceleration of \[4\,m/{s^2}\], then B will catch A after how much time
	The motion of a particle is described by the equation \[x = a + b{t^2}\] where \[a = 15\] cm and \[b = 3\] cm/s2. Its instantaneous velocity at time 3 sec will be