Question

A petrol tanker has mass 2800kg when empty and holds 30m³ of petrol when full . The density of petrol is 740kg/m³

a. Calculate the total mass of the tanker when full of petrol

b. The full tanker is travelling along a road when the driver observes an obstruction and applies the brakes. A resultant force of 30000N acts on the tanker. Calculate the deceleration of the tanker

Answer 1

a)

$$M=2800+(740)(30)=25000\ kg$$

b)

$$a=\frac{30000}{25000}=1.2\frac{m}{s^2}$$