Question

The figure shows velocity-time graph of a stone thrown vertically upwards till it comes back to the ground. Find the net displacement of the stone.

• A. $0m$
• B. $160m$
• C. $80m$
• D. $100m$

Answer 1

The correct option is A $0m$

Net displacement $=$ Area of AOB $-$ Area of BDC $=(\frac{1}{2}\times OA\times OB)-(\frac{1}{2}\times BD\times CD)=(\frac{1}{2}\times 40\times 4)-(\frac{1}{2}\times 40\times 4)=0$