Question

Please help!!!

1. If average acceleration is calculated using the equation, “change in velocity/change in time,” what is an objects acceleration if it’s velocity is 24cm/s at 3s? Be sure to include units in your math work and in your final answer.

2. Use the graph below to answer the following question: if average acceleration is calculated using the equation, “change in velocity/change in time,” what is an objects acceleration at 4s? Be sure to include units in your math work and in your final answer.

Answer 1

Answer: 1. 8cm/s²

2. 9cm/s²

Step-by-step explanation:

1. Use equation for acceleration: a=(V2-V1)/t

V1 Speed on start

V2 speed on finish

V1=0 m/s

V2=24cm/s=0.24m/s

t=3s

a=(0.24m/s-0m/s)/3s

a=0.24m/s/3s

a=0.08m/s²=8cm/s

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2.Use equation for acceleration: a=(V2-V1)/t

V1 Speed on start

V2 speed on finish

V1=0cm/s

V2=36cm/s

t=4s

a=(36cm/s-0cm/s)/4s

a=36cm/s/4s

a=9cm/s²