Physics Ex 2.4 Compiled

I compiled the exercise so you won't have to scroll down to find the first part of the work. So, there it is lah.

Excercise 2.4

1(a) A lorry managed to travel a distance of 6km in the last 15 min. Upon nearing a traffic light, the lorry driver stepped on his brakes to stop his lorry. The speed of the lorry decreased uniformly and came to a halt after 3 seconds. Calculate
(i) the velocity of the lorry in the initial 15 minutes
(ii) the initial velocity of the lorry
(iii) the deceleration of the lorry

(b) A steel ball of mass 1 kg is dropped vertically from a table as shown in Figure 1(which habib will post later). A bucket of sand is put beside the table so that the steel ball can drop into it.

If the steel ball took 0.5 s to reach the bucket of sand, calculate:

i ) The velocity of the stell ball when it hit the stone.

ii) The height of the table.

iii) The deceleration of the stell ball if it managed to sink 10cm into the sand.

(consider: g = 10 m/s^2)

Okay, that's all for your exercise. Now just read page 8 in your Practical Book. Read, understand, conceptualize and repeat.