Question

Dean is slowing down on his skateboards. He starts at a speed of 5.5 m/s and slows to 1.0 m/s over a time of 3.0 seconds. What is his acceleration?

Answer 1

Answer:

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Explanation:

he starts at a speed of 5.5 m/s and slows to 1.0 m/s over a time of 3.0 seconds. what is dean's acceleration? ... he starts at a speed of 5.5 m/s and slows to 1.0 m/s over a time of 3.0 seconds.

Answer 2

Given :

• Initial velocity (u) = 5.5 m/s
• Final velocity (v) = 1 m/s
• Time (t) = 3 seconds

To find :

• Acceleration

According to the question,

By using Newtons first equation of motion we will solve this question,

→ v = u + at

Where,

• v stands for Final velocity
• u stands for Initial velocity
• a stands for Acceleration
• t stands for Time

Putting the value according to the formula,

→ 1 = 5.5 + a × 3

→ 1 - 5.5 = 3a

→ - 4.5 = 3a

→ - 4.5 ÷ 3 = a

→ - 1.5 = a

.°. The acceleration is - 1.5 m/s²...