Question

Answer the following:-

Answer 1

Answer:

Explanation:

a) slope under speed time graph gives acceleration.

∴ slope in 20 sec = acceleration in 20 sec= 25/20 = 1.25 m/s²

slope in last 10 sec = acceleration in last 10 sec= 25/10 = 2.5 m/s²

b) area under speed time graph gives distance covered

area in 20 sec = distance covered in 20 sec = 1/2 ×  25 × 20 = 250 m

c) area under graph = total distance covered

= ( 1/2 ×  25 × 20) +( 25 × 30 )+ (1/2 × 25 × 10)

= 250 + 750 + 125

= 1125 m

Answer 2

Answer:

your first answer is nose and ear has cartilage

Explanation:

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