Question

A car initially traveling at 15 m/s speeds up at a constant rate of 2.0 m/s2 for 3 seconds. The velocity of the car at the end of the 3 second interval is _________ m/s.

Answer 1

Vf = 21 m/s

Step-by-step explanation:

Data:

• Initial Velocity (Vo) = 15 m/s
• Acceleration (a) = 2.0 m/s²
• Time (t) = 3 s
• Final Velocity (Vf) = ?

Use formula:

• Vf = Vo + a * t

Replace:

• Vf = 15 m/s + 2.0 m/s² * 3s

Multiply the acceleration with time:

• Vf = 15 m/s + 6 m/s

Solve the sum:

• Vf = 21 m/s

The velocity of the car at the end of the 3 second interval is 21 meters per second.