Question

A body covers 200 m in the first two seconds and 220 m in the next two seconds.
What will be its velocity at the end of 7 seconds?​

Answer 1

Answer:

We have u+ v = 200 m/s => 2u + at = 2u - 30 => u = 115 m/s. Velocity at the end of 7 s is u + 7a = 115 - 105 = 10 m/s. Originally Answered: A body travels 200 cm in the first 2 seconds and 220 cm in the next four seconds.

Answer 2

u+ v = 200 m/s => 2u + at = 2u - 30 => u = 115 m/s. Velocity at the end of 7 s is u + 7a = 115 - 105 = 10 m/s. Originally Answered: A body travels 200 cm in the first 2 seconds and 220 cm in the next four seconds.