Question

When an object speeds up from 10 m/s to 70 m/s in 3 s, then its
acceleration is
A. 20 m/s square
B. 21 m/s square
C. 26 m/s
D. 20 cm/s square
Other:​

Answer 1

Explanation:

u=10m/s

v=70m/s

t=3s

a=v-u/t

a=70-10/3

a=60/3

a=20m/s2

Answer 2

A.20m/s square make as brainlist pls