Question

Helppppppo...................​

Answer 1

Step-by-step explanation:

Using the kinematics equation,

v = u + at

where v = Final speed = 15m/s

u = Initial Speed = 30m/s

t = time taken = 10 seconds

a = acceleration.

Substitute v , u and t to find a.

$15 = 30 + 10t \\ 10t = 15 - 30 \\ 10t = - 15 \\ t = - 15 \div 10 \\ = - 1.5 \frac{m}{ {s}^{2} }$