Question

Velocity time graph.

Answer 1

Answer:

1) 4 m/s

2) 4 m/s

3) 17.5 m/s

Explanation:

Slope of distance time graph is speed

1) From A to B

Time = 5 sec

Distance = 20 m

$Speed = \frac{Distance}{time} \\\\Speed = \frac{20}{5} = 4 m/s$

2) From B to C

Distance travelled by body is 20 m

Time taken = 10-5 = 5 sec

$Speed = \frac{Distance}{time} \\\\Speed = \frac{20}{5} = 4 m/s$

3) From C to D

Distance travelled = 55-20 = 35 m

Time taken = 2 sec

$Speed = \frac{Distance}{time} \\\\Speed = \frac{35}{2}= 17.5 m/s$