An empty truck with a mass of 2500 kg has an engine that will accelerate at a rate of 1.5 m/s². What will be the acceleration when the truck has an additional load of 1500 kg? (in m/s²)

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Q. A motor car is travelling at

30 m / s

on a circular road of radius

500 m

. It is increaseing in speed at the rate of

2 m / s^{2}

. Then the acceleration of the car will be

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A driver accelerates his car first at the rate of 1.8m/s2 and then at the rate of 1.2m/s2. The ratio of the forces exerted by the engines will be respectively equal to

The correct option is D 3 : 2Given,a1=1.8 m/s2a2=1.2 m/s2Let Mass of car is m, to accelerate car with acceleration a force required F=maRatio =F1F2=ma1ma2=1.81.2=32

A driver accelerates his car first at the rate of $1.8 m / s^{2}$ and then at the rate of $1.2 m / s^{2}$ . The ratio of the forces exerted by the engines will be respectively equal to

The correct option is D 3 : 2
Given,
$a_{1} = 1.8 m / s^{2} a_{2} = 1.2 m / s^{2}$

Let Mass of car is $m$ , to accelerate car with acceleration $a$ force required $F = m a$

Ratio $= \frac{F_{1}}{F_{2}} = \frac{m a_{1}}{m a_{2}} = \frac{1.8}{1.2} = \frac{3}{2}$