Question

A cart rolling down an incline for 5.0 seconds has an acceleration of 4.0 m/s2. if the cart has a beginning speed of 2.0 m/s, what is its final speed?

Answer 1

A cart rolling down an incline.

acceleration, a = 4.0 m/s²

Initial speed, u = 2.0 m/s

Final speed, v = ?

time, t = 5s

From equations of motion, we know that v = u + at

⇒ v = 2.0 + 4.0 × 5

⇒ v = 2.0 + 20.0

⇒ v = 22.0 m/s

Final speed is 22.0 m/s

Answer 2

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A cart rolling down an incline.

acceleration, a = 4.0 m/s²

Initial speed, u = 2.0 m/s

Final speed, v = ?

time, t = 5s

From equations of motion, we know that v = u + at

⇒ v = 2.0 + 4.0 × 5

⇒ v = 2.0 + 20.0

⇒ v = 22.0 m/s

Final speed is 22.0 m/s

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