Question

Nancy is pushing her empty grocery cart at a rate of 1.8 m/s. 30 seconds later,

she is pushing the, now full cart, at a rate of 0.54 m/s. Calculate the acceleration
of the cart.

Answer 1

• initial velocity=u=1.8m/s
• Time=t=30s
• Final velocity=v=0.54m/s

`\\ \bull\tt\dashrightarrow Acceleration=\cfrac{v-u}{t}`

`\\ \bull\tt\dashrightarrow Acceleration=(0.54-1.8)/(30)`

`\\ \bull\tt\dashrightarrow Acceleration=(-1.26)/(30)`

`\\ \bull\tt\dashrightarrow Acceleration=-0.042m/s^2`