Question

a train moving at a speed of 100m/s comes to rest in 5 seconds find its accelaration ? its positive or negative​

Answer 1

Explanation:

acceleration is -20

negative

Answer 2

V=0

u=100 m/sec

time=5 sec

acceleration:-

$\frac{v - u}{t} = \frac{0 - 100}{5} = \frac{ - 100}{5} = - 20$

Acceleration is in negative i.e. (-20 m/s)

Hope it helps you...✌️❣️‼️☣️