Question

The velocity of a body moving with a uniform retardation of 5ms^-2 is 100ms at an instant.its velocity after 7sec is what

Answer 1

Answer:

65 m/s

Explanation:

t = Time taken by the body

u = Initial velocity of the body = 100 m/s

v = Final velocity

a = Acceleration of the body = -5 m/s² (negative because deceleration)

From equation of motion

$v=u+at\\\Rightarrow v=100-5\times 7\\\Rightarrow v=65\ m/s$

The body which has uniform retardation of 5 m/s² is 100 m/s has a velocity of 65 m/s after 7 seconds

Answer 2

see attachment for answer and mark as BRAINLIEST