We will be solving interesting sets as a part of this series LRDI of the Day. I will be posting a video solution by the end of the day. You can keep a track of all the sets by clicking here: LRDI of the Day

#LRDIoftheDay #18

A car starts moving along a straight line in the North direction at t = 0 seconds. The speed–time graph for the car is given below for the first 15 seconds in which it covers a total distance of 320 metres.

The bar chart given below shows the distance covered by the car in the next 15 seconds.

The speed–time curve for the car is a straight line in the time intervals 0–5 seconds, 5–10 seconds, 10–15 seconds, 15–20 seconds, 20–25 seconds and 25–30 seconds

1. What is the speed (in m/s) of the car at t = 15 seconds?

2. What is the speed (in m/s) of the car at t = 30 seconds?

3. What is the average speed (in m/s) of the car between t = 8 seconds and t = 24 seconds?

If you cannot determine a unique answer to any question, mark x as your answer.

The solution:

You may go through our popular courses here (at discounted prices): Full LRDI course for CAT 2017 (Rs. 1750 only) | Full VARC course for CAT 2017 (Rs. 1750 only) | Full Quant course for CAT 2017 (Rs. 3500 only) | CAT 2017 full course (Rs. 6000 only) | Current affairs and GK (Rs. 299 only)